Benno's has a wacky history. King Sigismund III was a devotee of St Benno and invited peer priests from Bavaria to Warsaw in the 17th century. Their main aim was to support Germans living outside their home country. Ironically, in 1944, the chapel was blown to smithereens by you-know-who. Rebuilt by the Poles in 1958, it now has an interesting interior dating from 1977.
Open during mass and by prior arrangement.