This totalled roughly 100 million. Of these, 40 million came from government funds, Russia donated 10 million, and the rest was paid through private donations. Architecture Exterior The church is centrally planned edifice, having the form of a Greek Cross. It has a large central dome supported on four pendentives and buttressed on each side by a lower semi-dome over an apse. Beneath each semi-dome is a gallery supported on an arcade. The general concept is heavily based on the Hagia Sophia. Its main construction idea stems from the central square beneath the dome, it is closely related to the geometry used by Isidore of Miletus and Anthemius of Tralles. The central square in both churches has sidelines of 31 m, resulting in domes with approximately the same diameter (the dome of Hagia Sophia is slightly larger as it extends by approximately 0,5 the central square). The main differences in the dome structure is the high tambour in Saint Sava and that it is double-shelled. The low dome of Haghia Sophia was designed as calotte in which base 40 windows were set. As thus, both domes are built on pendentives at 40 m height, the dome of Saint Sava is approximately 10 m higher (54 to 67 m). The naos of the church is 46 m wide and 46 m long. The space behind the iconostasis will not be public, it is 21,80 wide and 17 m long. The church interior has on three sides narthexes of which two have 9 m depth and 31,70 m width. Within the north and south narthex two small chapels will be created. The narthex to the main entrance in the west is 2 m longer and has four more columns than the other two. Above the narthexes are three galleries with the one of the west side assigned to the church choir. As of 2019 the marble iconostasis is in work and will have six main icons and three doors. On the left and right sides of the iconostasis are bishopric seats. The dome is high, while the main gold-plated cross is another high, which gives a total of to the height Church of Saint Sava. The peak is above the sea level ( above the Sava River); therefore the church holds a dominant position in Belgrade's cityscape and is visible from all approaches to the city. The church is long from east