Bekenntniskirche, Protestant parish church in Alt-Treptow, Germany

The Bekenntniskirche is a Protestant parish church in Alt-Treptow built of dark red-brown ceramic tiles with decorative brickwork. Its facade is divided into three parts by two stair towers that rise into square bell towers topped with metal crosses. The interior is a hall church with an anteroom, a nave, and a rectangular altar space to the north, with a community hall of the same size beneath the nave.

The Bekenntniskirche was built after a plot on Plesser Straße was bought in 1929; the foundation stone was laid on 9 August 1930, the 400th anniversary of the Augsburg Confession, and the church was consecrated on 16 August 1931. On 14 April 1945 an Allied bomb destroyed the altar window, which was rebuilt in altered form in 1946. Since 1948 it has been the only church of the Berlin-Treptow congregation.

The church takes its name from the 400th anniversary of the Augsburg Confession in 1530, celebrated when the foundation stone was laid on 9 August 1930. Above the pointed arch, oversized mosaics show Martin Luther and Philipp Melanchthon in scholar's robes holding a Bible; over Luther, mosaic lettering quotes his hymn "Ein feste Burg ist unser Gott". A mosaic above the main portal spells out the church's name.

The main portal on Plesser Straße opens onto a freestanding staircase leading up to the church hall on the first floor; the two stair towers have their own lower entrances. The community hall beneath the nave, with its raised stage, serves as a winter church. The building sits within the closed block-edge development, so the brass crosses on the two tower tops are the only feature breaking the street line.

Because the plot was cramped, the church is not oriented east as usual: the choir faces north. The building also fits into Berlin's perimeter block development, broken only by the brass-coloured crosses on the two tower tops.