The oldest Roman lighthouse still in use.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Home of one of history's most famous cartoonists just as he left it.

A curious cave church carved into the face of a cliff.

Structure built from the skulls of vanquished foes.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

Humble beginnings for one of the world's most famous scientists.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Traditional 11th-century outdoor tannery.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

Crumbling necropolis set high above Fez.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Founded as a refugee camp, now a popular tourist spot.

Numerous impressive carvings are embedded in the trees lining this street in Marrakech.

Mosaics, storks, and brothels—this ancient city has it all.

A fortified city, home to a remaining population of five families

Morocco's Argania trees are infested with nut-hungry goats.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

One man is on a singular quest to name an island after a famous hip-hop artist.

One of only two civilian settlements in the desolate lands of chilly Antarctica.