St. Olaf's Church, Tallinn

St. Olaf’s, or St. Olav's Church (Estonian: Oleviste kirik; German: Olaikirche), is a Baptist church in Tallinn, Estonia. Originally a Roman Catholic Church, it is believed to have been built already in the 12th century by Scandinavian merchants, decades before the Kingdom of Denmark conquered Tallinn (Reval) in 1219. Its dedication relates to King Olaf II of Norway (also known as Saint Olaf, 995–1030). The first known written records referring to the church date back to 1267. It was extensively rebuilt during the 14th century.