A futuristic, brutalist masterpiece that is also strangely prison-like.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Romania's triumphal arch looks out over Bucharest.

The 20-mile causeway that separates the Netherlands from the sea.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

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

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

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

Yo, Adrian!

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

A local prank turned town icon.

There aren't too many operational funiculars around, but Pittsburgh has two!

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Where America's first doomsday cult awaited the end of the world.