This home is decked out like a psychedelic explosion of colors and bowling balls.

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

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

The topiary maze at the Habsburg hunting lodge.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

A small marionette collection located within the dark cellars of an 11th-century Austrian castle.

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

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

The world's oldest known salt mine.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Be(w)ar(e) the moat around this historic Czech castle.

The world's smallest drawbridge.

This star-shaped military outpost is now simply trying to protect itself from neglect.

A world-class collection of mechanical musical instruments and automata.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A trompe-l'oeil statue honoring the first guide dog in North America.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

A seemingly inexplicable memorial honors a beloved Tampa fruit-seller.

One of the last of the great 1920s movie palaces is a Floridian Greco-Spanish-Persian dreamscape.