The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A two-way chairlift system between Zugliget and the highest point in the city.

Budapest's Communist-era statues, banished to the suburbs.

A Hungarian pharmacy museum with a box full of mummy powder.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

The only museum with its curator—and her pets—buried inside.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

Armenian monks at an island monastery in the Venetian Lagoon make a rare rose petal jam.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The largest and most famous wax anatomical collection anywhere in the world.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.