Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

A 19th-century British industrialist built this Louis XIII–inspired chateau for his homesick French wife.

360° views of the city plus five floors of optical illusions and hands-on science.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

The remains of this misplaced church were moved here stone by stone.

These abandoned country fairgrounds are filled with replicas of Spanish monuments.

The earliest known map to show America, discovered by accident at a Paris bookshop.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

Commonly acknowledged as the only public monument to the Devil himself.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

A dark Victorian well house now plays host to mystical waters and pagan shrines.

One of the oldest trees in Britain may have been witness to some of the country's formative moments.

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

Sail in for a ’dam good slice.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.