For understanding of a symbolic and architectural phenomenon of Church of the Ascension Kolomna it is necessary to address canons of town-planning model of medieval Moscow comprehending itself "the Third Rome", both the only heir of Byzantium, and the bogoizbranny power urged to keep Orthodox Church and the center of world Orthodoxy. Medieval Moscow reproduced in the town planning symbols of the main Christian civilizations – Jerusalem, Constantinople, Rome as which successor I felt, and an image of the God's Hail from John the Evangelist's Revelation. Moscow it is comprehended I settled as an architectural and town-planning icon of the God's Hail – Heavenly Jerusalem – and assimilated in an image of the Holy Land connected with mortal life of Lord Jesus.