The parochial Gothic St. James' Church with the huge 60 m high tower was built in the 14th century. It soon burnt down and in the 15th century it was built again, as a late-Gothic two-aisled church. After the arrival of Jesuits (middle of the 17th century) the Black Chapel, sacristy and oratory were added. The sacristy and oratory were demolished during the reconstruction in 1892.
The deambulatory was added in 1737. The organ-loft is built within the nave and the original Baroque organ from 1725 can be seen there.