"Saint Sophia Cathedral in Kyiv"

The structure has 5 naves, 5 apses, and (quite surprisingly for Byzantine architecture) 13 cupolas. It is surrounded by two-tier galleries from three sides. Measuring 37 to 55 m (121 to 180 ft), the exterior used to be faced with plinths. On the inside, it retains mosaics and frescos from the 11th century.

After the October Revolution of 1917 in Russia and during the Soviet anti-religious campaign of the 1920s, the government plan called for the cathedral's destruction and transformation of the grounds into a park "Heroes of Perekop" (after a Red Army victory in the Russian Civil War in Crimea). The cathedral was saved from demolition. in 1934, Soviet authorities confiscated the structure from the church, including the surrounding 17th–18th-century architectural complex and designated it as an architectural and historical museum. 

Since the late 1980s, Soviet, and later Ukrainian, politicians promised to return the building to the Orthodox Church. Due to various schisms and factions within the Church the return was postponed as all Orthodox and the Greek-Catholic Churches lay claim to it. Although all the Orthodox churches have been allowed to conduct services at different dates, at other times they are denied access. A severe incident was the funeral of Patriarch Volodymyr of the Ukrainian Orthodox Church – Kyiv Patriarchate in 1995 when riot police were forced to prevent the burial on the premises of the museum and a bloody clash took place. After events such as those no religious body has yet been given the rights for regular services. The complex now remains a secular museum of Ukraine's Christianity, with most of its visitors being tourists.