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

This giant temperature attraction created some giant electric bills.

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

A world-class observatory in the California desert.

The ghost town that ended up on Ebay.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The abandoned personal amusement park of the King of Pop.

This ancient Hawaiian henge may have been an early star chart.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

As its grandiose name implies, this wooden dome is unsurpassed in size.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

The world’s largest Masonic temple was saved by the White Stripes.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

What was once the largest NFL stadium.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

The birthplace of professional hockey on the shores of Portage Lake.

The magic's in the hole!

Boise State's stadium was the first non-green football field in the world.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

World-famous, Pink's still manages to keep its prized cult fetish status.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.