Fodor's Expert Review Museum of the Order of St. John

This fascinating museum tells the story of the Knights Hospitallers of St. John, from the order's 11th-century Crusader origins in Jerusalem to its present-day incarnation as the St. John Ambulance service. The museum is spread across two adjacent sites: the arched St. John's Gatehouse, which dates back to 1504, and the Priory Church with its atmospheric Norman crypt. An excellent interactive display explores the order's past, both as a military force and a religious institution that cared for sick pilgrims, and the eclectic variety of objects on display reflects that colorful history: from antique medicinal jars and medical equipment to a bronze cannon given by Henry VIII before he dissolved the order altogether. It's free of charge to visit the museum galleries and garden, but if you want to experience the historic rooms, the church, and the crypt, then you'll need to prebook your place on a guided tour.