From 135 feet high riders plunge down the world's tallest freestanding body slide at 65 mph.

Drive past the giant fruit sculptures and up to the window for a menu of fruity treats.

WWII rocket launchpad in rural Germany and site of operation backfire.

The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

Micro-nation based around a nine-story high illegally built tower.

Old Danish castle immortalized in Shakespeare's Hamlet.

Nordic giants resurrected from the sea and restored to their former greatness.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

An old limestone mine transformed into a beautiful and unusual sculpture museum.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient artistic garden parlor full of hidden water wonders.

Vast network of air raid tunnels beneath Lombardy's capital.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

After years of being casually peed on by humans, this tree is peeing back.

Located in the house where Gustave Flaubert was born, this odd museum has more to do with medical grotesquery than the Western novel.

Japanese island famous for poison gas and fluffy bunnies.

Mysterious craters may have been home to an ancient cult.

The world's oldest known salt mine.