A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Once the home of a hermetic monk, this cave now houses a small church.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

An ancient burial ground believed to have been used for ritual sacrifice.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

Gigantic water vessel, permanently grounded in Southern Albania.

What happens when you cross a mayor and a painter?

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

This rare volcano spews the strangest and (literally) coolest lava in the world.

Arthur, Merlin, and Guinevere are among the largest and oldest satellite dishes on the planet.

A open air theatre built on a cliff by an eccentric British woman.

Cemetery established by the Victorians as a solution to the overflowing graveyards.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

The view from this giant Stone Age toad is unexpectedly beautiful.

One of the last remnants of the Bessemer process that revolutionized steel production during the industrial age.

One of the last doorless, continuously moving elevators still in use in the U.K.