St. Mary's Church, known in German as the Marienkirche, is a church in Berlin, Germany. The church is located on Karl-Liebknecht-Straße (formerly Kaiser-Wilhelm-Straße) in central Berlin, near Alexanderplatz. Its exact age is not known, but it was first mentioned in German chronicles in 1292. It is presumed to date from earlier in the 13th century. It was originally a Roman Catholic church, but has been a Lutheran Protestant church since the Protestant Reformation.