Museum of Pharmacy. The Museum of Pharmacy exhibition is housed in a part of a former pharmacy called the Red Crayfi sh on the ground-fl oor of a Baroque burgher‘s house. It was built within the barbican of St. Michael‘s Gate with adjacent moat. In the 18th century the front façade of the house was reconstructed in the Classicist style and extended with a stone entrance in the Rococo style. Open: Tue - Fri 10.00 a.m. – 5.00 p.m., Sat - Sun 11.00 a.m. – 6.00 p.m.