The Church of St John Aliturgetos is located in Nesebar. The church was not consecrated, hence the name - aliturgetos is the Greek for 'not consecrated'. The legend says that one of the builders fell down and was killed. The church canon did not allow a place where a man had been killed to be used for worship, but according to some records services were held in it.
The church was badly damaged during the 1913 earthquake. Its ruins in the southern part of the peninsula show that it must have been one of the most beautiful medieval churches in Nesebar. It is a domed cruciform church with three altar apses and a narthex. It is 18.5 m long and 10 m wide. The base of the cruciform part of the church is almost quadrangular, shaped by four columns. It has mixed masonry: stone and brick; the facade walls are segmented by blind two-step niches decorated with various geometrical patterns from bricks and stone cubes (ceramic plastic style).
The church was built in the 14th century; it has two entrances, from the north and south, which is rare in the architecture of church buildings.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.