This Polish cave has housed a dragon, a brothel, and an enduring legend.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This ancient market is often referred to as the oldest shopping mall in the world.

A sculpture serving as an homage to Pope John Paul II.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

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

Ancient snack bar of the Roman Empire re-opened.

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

Beautiful views and Roman-style statues on the Italian coast.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This 17th-century passageway is home to numerous bookshops, a witch legend, and the oldest pizzeria in the world.

This massive water spout has been luring visitors for hundreds of years, some to their death.

A park where people have been going to feed friendly pigeons since the 18th century

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This tiny home was originally a narrow alleyway.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

Hidden in the courtyard of the Victoria and Albert Museum is a little-known tribute to two celebrity pooches.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

Dozens of large-scale, creative, evocative curios from prominent artists dot the calm outdoor space around this major museum.