Built 1634-1680 and used in the past by the novices of the Discalced Carmelites.
The church was closed, but when we were trying to peer inside, a man came up to us and said something in Polish that we didn't understand. Turns out it was the priest opening the church for Mass. He let us look around for about five minutes, and then it was time to go.
Some of the other pictures of this lovely little church posted today: