The Cathedral of Saint Sava is a Serbian Orthodox church located in Vračar, Belgrade, Serbia. It is the largest Orthodox church in the world and ranks among the ten largest church buildings in the world.
Royal Doors of Trinity Cathedral in Hypatian Monastery in Kostroma-Royal Door - special door in Orthodox churches before the sanctuary. In great cathedrals it's richly decorated - but in all it's one of the most decorated and sacred parts of the temple, being open only at certain ceremonies and by the highest clergy. Here's a Baroc decor, made in XVIII century. On six medallions are: Four Evangelists, upper right - Theotokos and upper left - Gabriel.