Annunciation Cathedral in the Kremlin — Moscow, Russia (1484 - 89). It was built by masters from Pskov as a home church of the Great Moscow Princes and later of the Russian Tsars.
Photo Credit: By Andrew Griffith from United Kingdom - The Annunciation Cathedral, Kremlin, MoscowUploaded by Partyzan_XXI, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=8194225