A park filled with vibrant mosaics created by more than 300 folk artists.

Budapest's Communist-era statues, banished to the suburbs.

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

This outsider art house has gone from clinical creation to astounding artwork.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Macabre museum devoted to historical Viennese murders.

A church of bones, decorated with 40,000 human skeletons.

This former quarry is now a picturesque gorge that hides a sunken lake.

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

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

World's first "penitentiary," meant to be humane, drove men insane.

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

A very classy 1920s-era bar right in Grand Central Station.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

The best Tiki bar in Las Vegas.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

See massive fossils that are over 200 million years old in northeastern Arizona.