The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

France's national museum of scientific and industrial instruments.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Each of these hand-painted wooden boxes, which date to between the 16th and 19th centuries, contains a genuine human skull.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

The sign at the garden gate reads: "These Plants Can Kill."

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

One of Ireland's most infamous prisons for rebels including men, women and children.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Replica of Seville, Spains famous Giralda, a former minaret converted into a bell tower.

These ungulates have quite literally bounced back from the brink of extinction.

A small house in Tazones, completely covered in shells.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

Head to the mountains to catch a glimpse of Spain's endangered subspecies of brown bear.

This ancient rock painting is the oldest evidence of humans’ love affair with honey.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

Medieval village and microminiature museum.

This beautiful spit of land was once the summer playground of the king of Spain.

If you like Art Deco you will love this bridge.

The mysterious remains of a martyred teenage saint are venerated inside a small country chapel.

Holding the current title of "biggest chair in the world," it stands with little fanfare in Lucena, Spain.

A 12th century church completely covered in shells.

A house covered entirely with shells.