In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Pompeii's less famous neighbor is still revealing her secrets.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

The walls and streets of the ancient city are peppered with penises.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

A striped 12th-century basilica sits in the countryside of Sardinia.

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

This medieval city gate is now a blend of the past and the modern world.

2300-year-old Roman road connecting the empire.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The yawning maw of this pagan visage is said to bite off the hands of liars.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

Lie in a hammock where George Washington stood.

This abandoned subway station can still be seen on regular commuter trips.