The Elenska Basilica or Elensko Basilica (Bulgarian: Еленска базилика, Elenska bazilika) is a large partially preserved late Roman (early Byzantine) Christian basilica in west central Bulgaria. Dating to the 5th–6th century AD, it lies 5 to 6 kilometres (3.1 to 3.7 mi) northeast of Pirdop and 3 kilometres (1.9 mi) from Anton, on the right bank of the Elenska River (Еленска река, Elenska reka). The initially domeless basilica, which features thick walls and defensive towers, had a dome added in the mid-6th century, during the reign of Justinian I. The church was ruined in the early 18th century, during the Ottoman rule of Bulgaria.
Source: Wikipedia
