St. Catherine's Church, Gdańsk
St Catherine's Church (, ) is the oldest church in Gdańsk, Poland. It was a Protestant church from 1545 until the end of World War II in 1945, after which it returned to the Catholic Church. It houses the world's first pulsar clock (since 2011), the Museum of Turret Clocks (part of the Museum of Gdańsk) and previously (2000-2006) an art gallery (in its attic). In 2006 it suffered a major roof fire.