The site where 15th-century philosopher Jan Hus advocated church reform. Built in 1391 and extensively restored under the Communists, it still has scriptures painted on three original walls. Those interested in Hus or religious history will especially appreciate the chapel. The chapel is now used as the Ceremonial Hall for the Czech Technical University, and the days it is open vary each month and are listed next to the door. A Mozart concert is typically held each Saturday evening. Daily April-October 10 am-6:30 pm, November-March 10 am-5:30 pm. 40 Kc adults. Betlemske Namesti (1), Prague. Phone 224-248-505.