Detail of the Papal Altar and Baldacchino, located in the central part of St. Peter's Basilica in Vatican City, UNESCO World Heritage Site, papal enclave in Rome, Lazio, Italy, Europe

Rooftops panoramic day city north view with low rise buildings with red tiles, seen from St. Marks Campanile, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

Mosaic of Christ on exterior of Saint Peter and Saint Paul the Apostles Cathedral, Constanta, Romania

Religious mosaic on front of Saint Uspensky Sobor Russian Orthodox Assumption Cathedral, Tashkent, Uzbekistan

Ceiling painting of Christ, Church of the Holy Apostles, (Holy Apostles of Solaki), Ancient Agora of Athens, Athens, Greece

Christ with the twelve apostles and the organ in Parish Church, Spitz, Wachau, Waldviertel, Forest Quarter, Lower Austria, Austria, Europe

Original Fresco, 17th Century, Church of the Holy Apostles, 10th Century, Ancient Agora; Athens, Greece

Fresco, Holy Formation Cathedral, Trinity Sergius Lavra Monastery complex; Sergiev Posad, Moscow Oblast, Russia

Fresco, Holy Trinity Cathedral, founded in 1902; Sibiu, Transylvania Region, Romania

Interior Fresco, St George Church Mirauti, 1375; Suceava, Suceava County, Romania

Fresco, The Resurrection Church on the Debra; Kostroma, Kostroma Oblast, Russia

Fresco, Holy Formation Cathedral, Trinity Sergius Lavra Monastery complex; Sergiev Posad, Moscow Oblast, Russia

Fresco, Troitse-Sergiyev Varnitskiy Monastery, near Rostov Veliky, Golden Ring; Yaroslavl Oblast, Russia

Fresco, The Resurrection Church on the Debra; Kostroma, Kostroma Oblast, Russia

Romania, Constanta, Mosaic of Christ on exterior of Saint Peter and Saint Paul the Apostles Cathedral.