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

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

Ride a boat through this magnificent underground world, which now doubles as a theater.

One of the few places of its kind, this space research center sits deep in the countryside of Matera.

An impressive bridge over a ravine also served as an aqueduct.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.

A long-buried ancient ruin unearthed right in the middle of the city.

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

Southern Italy's spinning top village.

The building where Mary, Queen of Scots was said to have bathed in white wine.

A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

Today, Kent's medieval monarchs hold court on a busy pedestrian thoroughfare—or at least their statues do.

An amazing collection of curiosities hidden in a small Welsh village.

Home to the most complete dodo remains known - one head, and one foot.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Used as an example in one of the first dictionary entries for "museum" in 1706.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

A plaque marks the humble origins of an artistic muse who embodied the ideals of Pre-Raphaelite beauty.

The beams of the New College, Oxford dining hall come with an amazing story.

This 11th century tower is said to be the oldest building in Oxford.