Events & Activities What's On/Events Leper Chapel Opening, Cambridge Sat 20 April, 12-3.00 at Cambridge Leper Chapel. Your chance to see inside one of Cambridge’s oldest buildings. The Leper Chapel dates from 1125 when it was built as a place of worship for Lepers at an adjacent hospital. The building has 900 years of fascinating history, in that time being used as bar, warehouse, dwelling, for animals and a place of worship. This atmospheric building is grade 1 listed and contains architectural styles from several periods since 1125. The Chapel is not usually open to the public. Free, donations appreciated.