Nessebar is located on a small peninsula in the Black Sea which is linked with the land only by a long and narrow isthmus. No one can say for sure whether the isthmus is natural or man-made. Nessebar has existed for more than 9,000 years. It emerged as a fortified Thracian settlement. Afterwards it was a Greek polis, then a Roman colony, and a Byzantine town. Most of the old buildings date from 11th to 14th centuries. Almost all the churches are made in the so-called “picturesque” style: walls intersected by pilasters and lunettes with stone, brick and ceramic ornaments and arches along the cornice. Some of the churches have stunningly beautiful facades and interiors and are among the best preserved ones on the Balkan Peninsula. The oldest one is the Sveti Ioan Krestitel (St. John the Baptist, 10th - 11th centuries).
Today the old part of the town has regained its original romantic atmosphere: narrow cobblestone lanes, tiny squares, two-storey houses with stone-built ground levels and wooden upper floors jutting above the streets and external staircases, gift shops, pubs and taverns.