Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Five candy-colored villages on the Italian Riviera.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The topiary maze at the Habsburg hunting lodge.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's newly reopened hands-on science museum.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Shop selling 500 flavors of soda has something for everyone.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Elvis's own personal tropical hideaway.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

One man's prolific, decade-long quest to turn trash into artistic treasure.