In 1983, UNESCO declared Nessebar a Monument of Culture. Three thousand years of history are embedded in every stone of this tiny village jutting into the sea. Archaeologists continue to uncover the traces of others that, in centuries past, walked its narrow streets. In the Middle Ages it was known as The Town of Churches for its more than 80 churches and chapels, many of which survive to the present day.

Nessebar also evokes the typical Bulgarian Renaissance style in architecture and construction, characterized by carved wooden ceilings, bay windows, whitewashed walls and romantic little yards with high wooden gates. Many of the houses date from the 13th to the 19th centuries. One can also see the remains of an ancient fortress and 40 medieval churches, of which fourteen are well preserved, and three have restored windmills.

The Archaeological Museum with its Hall of Icons is the place to learn more about the history of Nessebar. The museum has Thracian stone anchors, stele, ancient Greek black ceramics of the Antiquity and the Middle Ages, marble architectural elements of all epochs and a rich collection of icons.
The Ethnographic Museum is in the 160-year old house of the Moskoyany family. Traditional local costumes and jewelry are displayed on the second floor.

The Saint Stefan Church is known as the New Bishopric. It was built in the 11th Century and it is famous for its unique wall paintings dating back to the 16th Century.
The Saint Saviour Church (Sveti Spas) was erected in the 17th Century when all of Bulgaria was under Turkish rule. The Turks insisted that Eastern Orthodox shrines and churches had to be dug into the ground and with a very simplified architectural design. Wall paintings in this church date from the 16th Century.
The Christ Pantocrator Church was erected during the 13th and 14th centuries. It can be found in the centre of the old town. Its impressive and unique architectural design is testimony to high artistic principles. Each facade has a different decoration. The richest decoration is in the eastern facade.
John the Baptist Church dates from the 10th to 11th centuries. It is one of the best-preserved churches from that period. The frescoes have survived the ravages of time and are thought to be from the 14th, 16th and 17th centuries.
The Archangels, Michael and Gabriel, Church was built between the 13th and 14th centuries. The facades of this basilica are decorated with brick ornaments, arranged in a checkered design.