This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A breathtakingly steep set of stairs is carved directly into the face of the sea cliffs of Bonifacio.

Ancient cave tombs known as the "houses of fairies."

Stalactites and stalagmites in a beautifully lit cave.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

This cliff-face port is considered a masterpiece of mining engineering.

An eerie gravel road full of shards of red bricks leads to the ruins of a deserted factory.

At an estimated 3,800 years old, this olive tree is one of the oldest on earth.

Packed with geological formations, an ancient river, and taxidermied seals, this overlooked coastal cave system is worth a spelunk.

Legends say that this small island was the final resting place of the Welsh saint of lovers.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

The stately remains of Llywelyn the Great's mighty fortress.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

The red letters in the literary pavement leading to the library form a mysterious code.

These rose marble urinals are the most luxurious loos in Liverpool.

A thousand year old oak tree survives in Liverpool.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.