Beneath the city of Lourdes, France is a massive, concrete church.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

Largest lake in Great Britain measured by surface area.

An eccentric aristocrat brought these Australian natives to their current Scottish home.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.

Theme park featuring miniature replicas of European monuments.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Cozy basement bar sports an inventory of over 2,000 beers.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

The Devil’s own choice when he needs a drink in Brussels.