Little visual evidence remains of Barcelona’s medieval Jewish quarter, and what there is has been painstakingly unearthed from centuries of building and construction. Situate yourself in the small swathe of Carrers l’ Arc de Sant Roman, Call, Bisbe, and Sant Sever and you’ll be in the thick of it, then imagine the terror on August 5^th, 1391 when the Call was attacked by a mob of anti-semites and 300 people killed in the space of an hour. Only one of the two original Call synagogues remains and it’s open to the public. Inside you’ll see an austere, cave-like place of worship, jusxaposed with Roman vestiges and, if you are interested, a helpful receptionist who will fill you in the on the history of El Call.