The London pub overlooks where the Mayflower was moored before setting sail for the New World.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

Founded by a man who called himself the greatest hunter alive.

Medical museum featuring a number of excellent medical models.

A local landmark with generations of spraypainted messages, and more being added each day.

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

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

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

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Museum dedicated to the terror regimes of Hungary.

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

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

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

This artificial archipelago was supposed to resemble a map of the world.

Built following the War of 1812, this fort has withstood hurricanes for centuries.

A tiny basalt mountain with an observation tower overlooking the beautiful Bavarian countryside.

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

The final resting place of the famed German pilot, the "Red Baron."

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.