Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Once a year, at exactly 11:11 a.m., this monument comes to life.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

A self-built castle made by a mysterious man.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

This space-age looking obelisk rises over a city in the rainforest, meant to resemble the local castaña tree.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

The unusual burial monument of Arizona's first governor.

A geological mystery on Camelback Mountain.

A mysterious "wedding cake" castle in the middle of the urban desert.

An urban laboratory.

Miniature art that tells an enormous story.

Limestone caves with spectacular showcase chambers.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Most-visited and most-photographed slot canyon in the American Southwest.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The final resting place of New Orleans' most famous voodoo priestess.

A snapshot of the city's fascinating voodoo culture.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.