The Sioni Cathedral of the Dormition () is a Georgian Orthodox cathedral in Tbilisi, the capital of Georgia. Following a medieval Georgian tradition of naming churches after particular places in the Holy Land, the Sioni Cathedral bears the name of Mount Zion at Jerusalem. It is commonly known as the "Tbilisi Sioni" to distinguish it from several other churches across Georgia bearing the name Sioni. The Tbilisi Sioni Cathedral is situated in historic Sionis Kucha (Sioni Street) in downtown Tbilisi, with its eastern façade fronting the right embankment of the Kura River. It was initially built in the 6th and 7th centuries. Since then, it has been destroyed by foreign invaders and reconstructed several times. The current church is based on a 13th-century version with some changes from the 17th to 19th centuries. The Sioni Cathedral was the main Georgian Orthodox Cathedral and the seat of Catholicos-Patriarch of All Georgia until the Holy Trinity Cathedral was consecrated in 2004. History According to medieval Georgian annals, the construction of the original church on this site was initiated by King Vakhtang Gorgasali in the 5th century. A hundred years later, Guaram, the prince of Iberia (Kartli), in c. 575 began building a new structure, which was completed by his successor Adarnase in circa 639. According to legend, both princes were buried in this church, but no trace of their graves has been found. This early church was completely destroyed by Arabs, and was subsequently built de novo. The cathedral was completely rebuilt by King David the Builder in 1112. The basic elements of the existing structure date from this period. It was heavily damaged in 1226, when its dome was ruined on the order of Jalal ad Din Mingburnu. It was subsequently repaired, but damaged again by Timur in 1386 and repaired by King Alexander I. It was again damaged during the Persian invasions in 1522 and in the 17th century. In 1657, the Metropolitan of Tbilisi, Elise Saginashvili (died 1670), substantially restored the cupola, vaults, added the southern chapel, paintings and decorations, which is written on southern annex, but the structure was again devastated in 1668, this time by earthquake. The regent of Kartli, batonishvili (prince) Vakhtang, carried out restorations of the cupola and stone plates of the cathedral walls in 1710, as it is carved on the northern wall. Thus, the current tufa facing of the church comes from that