Fodor's Expert Review LAPIS Museum

The beautifully restored 17th-century Basilica di Pietrasanta, a Cosimo Fanzago Baroque masterpiece built on the site of the Roman Temple of Diana, hosts regular multimedia exhibitions, but the star attraction here is the underground visit to a section of Naples’s oldest aqueduct. Four tours a day descend 40 meters below the busy Via dei Tribunali to large lavishly illuminated cisterns hewed from excavated tuff two millennia ago, still filled with running water (thanks to a collaboration with the city’s waterworks).  A quarter-mile stroll east through the tunnels takes you to where up to a thousand Neapolitans at a time huddled when the air-raid sirens sounded during World War II, often returning to the surface to find their houses destroyed by Allied or German bombs. Nowadays there’s a lift—the only archaeological elevator in Naples—to whisk you back up to the 21st century.