ancient city of nessebar, bulgaria

13th 13th14th 14th 350 850 3200 ago ancient architecture art best black built bulgaria bulgarian bulgarias burgas centuries century christ church churches cities city coast connected constructed currently decoration eastern europe exterior gallery heritage intact isthmusnnessebar its known largely lavish long mainland medieval middle more museum narrow nesebar nessebar old oldest one only originating orthodox pantocrator part peninsula preserved province redbrick sea site situated small survives than today town unesco was whitestone wide world years