The Church of Sveta Sofia
Oldest Orthodox church in the Bulgarian capital, to which it eventually gave its name. The church fell victim to invading hordes, fires and earthquakes several times over the centuries, and after a devastating 1858 earthquake, the building, then used as a mosque, was abandoned. The present, rather sober, red-brick structure is mostly 19th century, and was restored as a church in the early 20th century.