The great migration of peoples /V-VIth century/ threatened the eastern Roman empire- Byzantium. The early Byzantine fortresses were another source of defence against the barbarian tribes. Emperor Justinian the Great built and renewed 80 of them, mostly in Central Stara Planina. Melta, with its strategic position, was necessary for the Romans. The settlements on the roadside stations were also affected by the invasion of the North peoples. Life in Melta was in disorder. Despite the difficult situation during the early Byzantine period /V-VIth century/, the extensive building, which was consistent with the needs of Christianity, did not stop. It was directed towards the construction of churches, some of quite impressive dimensions. Such a church was built up on the hill in Lovech. It was of a rare architectural type. It belonged to the basilicas with a nave, two aisles and a dome, with some peculiarities in the layout and the spatial design. The basilica showed similarity only with two churches – one of them in Tsarigrad and the other one in Nikea / the Assumption Church/. The scientists assigned them an important place in the development of the Byzantine architecture. Here lay the great significance of the basilica in Lovech which was unique in our country and was the third one in the church construction of the Byzantine empire.