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{{Short description|Mausoleum in Soltaniyeh, Iranian national heritage site}}
{{Use mdy dates|date=June 2025}}
{{about|the mausoleum|the former mosque|Friday Mosque (Soltaniyeh)}}
{{Infobox religious building
| name                  = Dome of Soltaniyeh
| native_name           = {{lang|fa|گنبد سلطانیه}}
| native_name_lang      = fa
| image                 = Gonbad Soltaniye.jpg
| image_upright         = 1.4
| alt                   = 
| caption               = 
| religious_affiliation = [[Islam]]
| tradition             = 
| sect                  = 
| district              = 
| prefecture            = 
| province              = 
| region                = 
| deity                 = 
| rite                  = 
| festival              = <!-- or |festivals= -->
| organisational_status = [[Mausoleum]]<!-- or |organizational_status= -->
| ownership             = 
| governing_body        = 
| leadership            = 
| bhattaraka            = 
| patron                = 
| consecration_year     = 
| functional_status     = Active
| religious_features_label = 
| religious_features    = 
| location              = [[Soltaniyeh]], [[Zanjan province]]
| locale                = 
| municipality          = 
| cercle                = 
| state                 = 
| country               = [[Iran]]
| map_type              = Iran
| map_size              = 250
| map_alt               = 
| map_relief            = 1
| map_caption           = Location of the mausoleum in [[Iran]]
| mapframe = yes<!-- see below for more mapframe parameters -->
| grid_name             =
| grid_position         =
| sector                = 
| territory             = 
| administration        = 
| coordinates           = {{coord|36|26|2.3|N|48|47|45.7|E|display=title, inline|format=dms}}
| coordinates_footnotes = 
| heritage_designation  = 
| architect             = 
| architecture_type     = [[Islamic architecture]]
| architecture_style    = [[Ilkhanid architecture]]
| founded_by            = 
| creator               = 
| funded_by             = 
| general_contractor    = 
| established           = 
| groundbreaking        = 
| year_completed        = {{circa|1313}} [[Common Era|CE]]
| construction_cost     = 
| date_demolished       = <!-- or |date_destroyed= -->
| facade_direction      = 
| capacity              = 
| length                = 
| width                 = 
| width_nave            = 
| interior_area         = 
| height_max            = 
| dome_quantity         = One
| dome_height_outer     = {{cvt|50|m|ft}}
| dome_height_inner     = 
| dome_dia_outer        = {{cvt|25|m|ft}}
| dome_dia_inner        = 
| minaret_quantity      = Six
| minaret_height        = 
| spire_quantity        = 
| spire_height          = 
| site_area             = 
| temple_quantity       = 
| monument_quantity     = 
| shrine_quantity       = One: [[Öljaitü]]
| inscriptions          = 
| materials             = Bricks; tiles; plaster; marble; timber; bronze; gold; silver
| elevation_m           = <!-- or |elevation_ft= -->
| elevation_footnotes   = 
| nrhp                  = 
| designated            = 
| added                 = 
| refnum                = 
| delisted1_date        =
| website               =
| module                = {{Infobox UNESCO World Heritage Site
| child = yes
| official_name = Mausoleum of Oljaytu
| image         = 
| image_upright = 1.2
| location      =
| part_of       = [[Soltaniyeh]]
| criteria      = {{nowrap|{{UNESCO WHS type|(ii), (iii), (iv)}}(ii), (iii), (iv)}}
| ID            = 1188-001
| coordinates   =
| year          = 2005
| area          = {{convert|790|ha|acre|abbr=on}}
| locmapin      = Iran
}}
{{Infobox historic site
| embed = yes
| image = Soltaniye by Jean Chardin (1673).jpg
| image_size = 260
| caption = [[Jean Chardin]] etching of the dome in 1673
| designation1 = INHL
| designation1_offname = Dome of Soltaniyeh
| designation1_type = Built
| designation1_date = 6 January 1932
| designation1_number = 166
| designation1_free1name  = Conservation organization
| designation1_free1value = [[Cultural Heritage, Handicrafts and Tourism Organization of Iran]]
}}
| footnotes             = 
}}
The '''Dome of Soltaniyeh''' ({{langx|fa|گنبد سلطانیه}}; {{langx|ar|قبة السلطانية}}) — variously called the '''mausoleum of Oljaytu''',<ref>{{Cite web |title=Soltaniyeh |url=https://whc.unesco.org/en/list/1188/ |access-date=2025-04-19 |website=UNESCO World Heritage Convention}}</ref> '''Tomb of Uljaytu''',<ref name=":3" /> or '''Soltaniya complex''',<ref name=":25">{{cite web |last=O’Kane |first=Bernard |date=2013 |orig-date=1995 |title=Domes |url=http://www.iranicaonline.org/articles/domes |access-date=30 December 2017 |website=Encyclopaedia Iranica}}</ref> among other designations — is an historic [[mausoleum]] and monument complex, located in [[Soltaniyeh]] city, in the province of [[Zanjan province|Zanjan]], [[Iran]]. It was built as the mausoleum of the [[Ilkhanid]] Mongol ruler [[Öljaitü]] (also known as Muhammad Khodabandeh). It was originally the centerpiece of a larger complex of buildings that included a mosque, residences, and other services, though these other buildings have generally not been preserved.<ref name=":05223">{{Cite book |last=Tabbaa |first=Yasser |title=Encyclopaedia of Islam, Three |publisher=Brill |year=2007 |isbn=9789004161658 |editor-last=Fleet |editor-first=Kate |location= |pages= |language=en |chapter=Architecture |editor-last2=Krämer |editor-first2=Gudrun |editor-last3=Matringe |editor-first3=Denis |editor-last4=Nawas |editor-first4=John |editor-last5=Rowson |editor-first5=Everett}}</ref>  

The mausoleum was built sometime between 1307 and 1313 [[Common Era|CE]].<ref name=":3">{{Cite book |last=Blair |first=Sheila S. |author-link=Sheila Blair |url=https://books.google.com/books?id=-mhIgewDtNkC |title=The Art and Architecture of Islam 1250-1800 |last2=Bloom |first2=Jonathan M. |author-link2=Jonathan M. Bloom |publisher=Yale University Press |year=1995 |isbn=9780300064650 |location= |pages=7–8 |language=en}}</ref> Its double-shelled main dome is one of the largest brick domes in the world,<ref>{{Cite book |last=Bolhassani |first=Damon |url=https://books.google.com/books?id=u8ZGEQAAQBAJ&dq=soltaniyeh+brick+dome&pg=PA44 |title=Funicular Structures: The Art of Building Efficiently |publisher=Taylor & Francis |year=2025 |isbn=978-1-040-32285-7 |page=44 |language=en}}</ref> measuring almost {{Convert|25|m|ft}} in diameter and approximately {{Convert|50|m|ft}} high.<ref name=":25" /> Much of its exterior decoration has been lost, but the interior retains superb [[Mosaic|mosaics]], [[faience]], and [[Mural|murals]]. The Dome of Soltaniyeh paved the way for more daring Iranian-style cupola constructions in the Persianate world, such as the [[Mausoleum of Khoja Ahmed Yasavi]] and the [[Taj Mahal]]. Its importance in the Islamic world may be compared to that of [[Filippo Brunelleschi|Brunelleschi]]'s cupola for Christian architecture.<ref name=":1" />{{Better source needed|reason=The current source may be insufficiently reliable ([[WP:NOTRS]]). The original link is now dead and it's unclear what publication it comes from. As this is a strong claim, it should be supported by strong citations.|date=April 2025}} The structure is currently{{when?|date=June 2025}} undergoing extensive renovation.

The mausoleum was added to the [[Iran National Heritage List]] on 6 January 1932 and is administered by the [[Cultural Heritage, Handicrafts and Tourism Organization of Iran]]; and, since 2005, has formed part of the [[UNESCO]] [[World Heritage List|World Heritage site]] of Soltaniyeh.

== History and patronage ==
The Mongol invasion of the Islamic world began with the conquest of eastern Iran in 1221, and ultimately ended the period of Abbasid rule (750-1258). The Mongols conquered most of West Asia, and a branch of the dynasty known as the [[Ilkhanids]] (1256-1353) concentrated most of their power in Iran.<ref>{{cite book |author=Yalman, Suzan |chapter=The Art of the Ilkhanid Period (1256-1353) |editor= |title=Heilbrunn Timeline of Art History |publisher=[[Metropolitan Museum of Art]] |year=October 2001 |page= |isbn= |location=New York }}</ref> 

The Mongol presence in Iran was marked by a shift away from traditional cities dependent on an agricultural hinterland to ones with an emphasis on access to pasture.<ref name=":0">{{cite journal |last=Blair |first=Sheila S. |author-link=Sheila Blair |title=The Mongol Capital of Sultaniyya: The Imperial |journal=Iran |volume=24 |year=1986 |publisher=Taylor & Francis, Ltd |page=139 |issn= |doi= }}</ref> An example of this new type of Mongol city was the city of Sultaniyya in northwestern Iran. Arghun, the Ilkhanid ruler of Iran at the time, established Sultaniyya as his summer capital. His son, Muhammad Oljeitu Khudabanda, furthered the city’s development and transformed it into the capital of the empire. After Oljeitu’s death, the city began a steady decline. Today, only two buildings remain that which show evidence signs of Sultaniyya’s its former wealth and importance: the octagonal tomb of the Dome of Soltaniyeh and an adjacent [[Khanqah|khanaqah]], a building designed specifically for Sufi gatherings as a spiritual retreat. The quality of the preserved tomb attests to the richness of its patronage by the Sultan Oljeitu.<ref>Blair (1986), p. 142</ref>

The large domed tomb chamber of Oljeitu was meant to rival the colossal tomb built by the Seljuq [[Ahmad Sanjar|Sultan Sanjar]] at Merv in 1157. The tomb of Oljeitu has an octagonal plan, like the [[Tomb of Ahmad Sanjar|Tomb of Ahmed Sanjar]], with both complexes being sponsored by the Ilkhanid court and were considered some of the most prestigious buildings at the time.<ref name=legacy>{{cite book |author1=Komaroff, Linda |author2=Carboni, Stefano |title=The legacy of Genghis Khan: Courtly Art and Culture in Western Asia, 1256-1353 |publisher=[[Metropolitan Museum of Art]] |year=2001 |pages= |isbn= |location=New York }}</ref>{{rp|123}}

The Global Heritage site of Gonbad-e-sultaniyeh has been recognised as a UNESCO World Heritage Site since 2005. It followed the specific historic UNESCO criteria landscape of four characteristics: ancient and historical monuments, farms, urban landscapes, and the Historical Grass of Soltaniyeh.<ref>{{Cite book |url=https://www.worldcat.org/oclc/1044756877 |title=Sustainable building for a cleaner environment : selected papers from the World Renewable Energy Network's Med Green Forum 2017 |date=2019 |author=Sayigh, Ali |author2=World Renewable Energy Network's Med Green Forum |isbn=978-3-319-94595-8 |location=Cham, Switzerland |oclc=1044756877}}</ref>

== Architecture and interior design ==
The Dome of Solteniyeh was one of the largest religious endowments of the 14th century,<ref>Blair (1986), p. 144</ref> and was utilized for multiple functions, such as Quran reading, praying, teaching, housing, and medical purposes. 

The construction of the double-shelled dome employed an interlocking arched herringbone network. The Dome of Soltaniyeh was one of the first to use this pattern in Iran, and is unique in choosing brick for its material as previous similar architectural structures often utilized wood.<ref name=":1">{{cite web |author=Irani, Ali |title=Structural Assessment and Historical Review of the Dome at Soltaniyeh |year=May 2015 |url=http://sultaniyya.org/wp-content/uploads/2015/05/Soltaniyeh_FinalPaper.pdf |work=sultaniyya.org |archive-url=https://web.archive.org/web/20221107130522/http://sultaniyya.org/wp-content/uploads/2015/05/Soltaniyeh_FinalPaper.pdf |archive-date=2022-11-07 }}</ref>

As for the interior of the tomb, it is decorated in tile and plaster. The insides of the [[iwan]]s’ walls possess white inscriptions that stand out against the blue background. The underside of the iwans are stuccoed with bands of ornament, that were later painted. A significant inscription--outlined with [[ogival]] forms sculpted over cloth--circles the entire dome. The galleries have low, wooden or marble railings. The windows are fitted with bronze screens, along with bronze knobs and balls set with gold and silver.<ref>{{cite book |author=Sims, Eleanor G. |chapter=The Iconography’ of the Internal Decoration in the Mausoleum of Uljaytu at Sultaniyya |title=Content and Context of Visual Arts in the Islamic World |editor=Soucek, Priscilla P. |pages=139-75 |series=Monographs on the Fine Arts |number=44 |location=University Park, Pa., and London |publisher=Pennsylvania State University Press |year=1988 }}</ref>

Following Islamic convention, Oljeitu’s tomb was placed in a garden, known in the Quran as a ''rawda''. This word was also added to the railing of the Prophet Muhammad’s tomb in Medina.<ref name=blair145>Blair (1986), p. 145</ref> Because of this, ''rawda'' became the label for funerary structures in Iran. Thus, Oljeitu’s tomb was referred to as a ''rawda''. Additionally, Oljeitu ensured that water could be successfully stored and utilized in the complex, through the use of [[qanat]]s and wells. A qanat is a downward sloping channel intended to transport water. Due to this, the flora and fauna surrounding the tomb were able to survive for a long time; specifically, “the gardens around the tomb complex were still being maintained in the seventeenth century.” <ref name=blair145/>

A 16th c. illustration made by [[Matrakçı Nasuh]] reveals that the face of the complex was split into two stories and was “flanked by minarets and surmounted by five domes.” <ref>Blair (1986), p. 144</ref> According to a later drawing of the tomb by Flandin and Coste, one can see possible evidence of a cap wall projecting from the northeast corner.<ref>Blair (1986), p. 141</ref> 

== Influence on other monuments ==
Because Oljeitu’s tomb was one of the most significant works of its time, it became an inspiration for many other complexes, both within and outside of Ilkhanid culture. Distinct features of the complex were later found on many other monuments, such as placement of paired minarets above a portal. This trend began in the Seljuq period, then became a normal inclusion in [[Ilkhanid architecture|Ilkhanid buildings]].<ref>{{cite book |author=Wilber, D. |author-link=Donald Wilber |title=The Architecture of Islamic Iran: the Ilkhanid Period |location=Princeton |year=1955 |page=27 }}</ref>

The Tomb of Oljeitu, like other Ilkhanid tombs, was integrated into a great complex--which no longer remains. These complexes were the “precursors of the type of large, planned funerary complexes, known as kulliye, that (were) built by the Ottomans at Bursa and elsewhere beginning in the second half of the fourteenth century.”<ref name=legacy/>{{rp|1256-1353}}

Another trend derived from Oljeitu’s tomb is the style of five domes placed above the portal. The Blue Mosque built by Saliha Khanum in Tabriz was inspired by this design; its portal and projecting sanctuary were very similar to Oljeitu’s complex. This famous tomb of Oljeitu remained an inspiration for several imperial Mongolian tombs, even the Taj Mahal.<ref name=legacy/>{{rp|1256-1353}}

=== Similarities with the Santa Maria Del Fiore ===
The Dome of Soltaniyeh features many architectural similarities to Brunelisschi’s dome for the [[Florence Cathedral|Santa Maria Del Fiore]].

There are several architectural similarities between the two domes. Structurally, both domes feature an arched network of herringbone bricks, called in Italian “spina -di -pesce”.<ref name=":1" /> The Dome of Soltaniyeh's high sphero-conical dome on an octagonal base exhibits is the same structure as the Santa Maria Del Fiore, both with eight ribs supporting each structure.<ref name=":2">Adapted from UNESCO Institute for Statistics (UIS), THE DOME OF SOLTANIYEH THE PASTURE WHICH BECAME THE CAPITAL CITY OF AN EMPIRE, https://whc.unesco.org/uploads/nominations/1188.pdf , 2005</ref> 

Finally both domes, feature a double-shelled structure. The Dome of Soltaniyeh was the first example of this structure in Iran, and several scholars hypothesize that it is possible for the construction system of Soltaniyeh to have been disseminated from Iran to Brunelleschi in Italy, in the time span of almost a century.<ref>{{Cite book |last=Necipoğlu |first=Gülru |title="Architectural Dialogues Across the Eastern Mediterranean: Monumental Domed Sanctuaries in the Ottoman Empire and Renaissance Italy", in Alina Payne, Renaissance and Baroque Architecture|publisher=John Wiley & Sons|year=2017|isbn=9781444338515|location=Hoboken, NJ|pages=594–623|language=English}}</ref><ref name=":2" />

Many academics argue that because of these similarities, and many more, that the Dome of Soltaniyeh influenced the Santa Maria Del Fiore, which was constructed 100 years later. However, it is possible&nbsp;that Bruneleschi and his engineers may have independently come up with the same solutions to similar architectural challenges that both domes faced.<ref name=":2" />

==Gallery==
<gallery>
Village of Soltaniyeh and dome in 1969.jpg|Village of Soltaniyeh and dome in 1969
Soltaniyeh exterior.jpg|The dome structure and its six [[minaret]]s, under restoration by [[ICHTO]]
Solt dome 2.JPG|Major reconstruction inside
Matrakçı Nasuh Soltaniyeh Map (1).JPG|16th century map of Soltaniyeh city
Matrakçı Nasuh Soltaniyeh Map (2).JPG|16th century map of Soltaniyeh city
Soltaniyeh interiors.jpg|Interior view
Soltanieh Dome fall 2014.jpg|The dome in 2014
Dome of Soltaniyeh, 2010.jpg|The dome in 2010
Interior view dome periphery.jpg|The dome interior 2010
</gallery>

==See also==
{{stack|{{Portal|Iran|Islam}}}}
* [[History of Persian domes]]
* [[List of mausoleums in Iran]]

==References==
{{Reflist}}

=== Bibliography ===
* {{Cite journal |last=Blair |first=Sheila S. |date=1986 |title=The Mongol Capital of Sulṭāniyya, &quot;The Imperial&quot; |url=https://www.academia.edu/28983070/The_Mongol_Capital_of_Sul%E1%B9%AD%C4%81niyya_the_Imperial_ |journal=Iran |volume=24 |pages=139 |issn=0578-6967}}

== External links ==
{{commons category-inline|Soltaniyeh Dome}}

{{World Heritage Sites in Iran}}
{{Mausoleums in Iran}}
{{Zanjan Province}}

[[Category:1300s in the Mongol Empire]]
[[Category:14th-century religious buildings and structures in Iran]]
[[Category:Architecture in Iran]]
[[Category:Buildings and structures completed in 1312]]
[[Category:Buildings and structures in Zanjan province]]
[[Category:Cemeteries in Iran]]
[[Category:Domes in Iran]]
[[Category:Ilkhanid architecture]]
[[Category:Mausoleums in Iran]]
[[Category:Mausoleums, shrines and tombs on the Iran National Heritage List]]
[[Category:Minarets in Iran]]
[[Category:Religious buildings and structures with domes]]
[[Category:Religious buildings and structures with minarets]]
[[Category:Tourist attractions in Zanjan province]]
[[Category:World Heritage Sites in Iran]]