Seven Saints Church, Sofia

The Black Mosque (Bulgarian: Черна джамия, romanized: Cherna dzhamiya; Turkish: Kara Camii) was completed around the year 1547.

The minaret collapsed during an earthquake in the 19th century and the mosque was abandoned by the Ottomans after the Liberation of Bulgaria in 1878 to become used as a military warehouse and prison.

The architect who suggested the conversion of the once Ottoman mosque into a Christian church was the Russian Alexander Pomerantsev, responsible for the Upper Trade Rows on Red Square, among other buildings.

Famous Bulgarian statesman Petko Karavelov also contributed significantly to the church's construction and was buried nearby in January 1903.

The large candlesticks in front of the altar were cast in 1903 from obsolete police badges from Eastern Rumelia and the Principality of Bulgaria (i.e. before the Unification in 1885).