Apple memorabilia in an undisclosed warehouse, hidden for undisclosed reasons.

An archive of nearly every day of Buckminster Fuller's life.

This massive World War II calculator hearkens back to the days when "computer" was a job title.

More gold than anywhere else, ever.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

A KFC honors an eighth-century Chinese poet with holograms and verse.

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

The only theatre in the world constructed specifically for sound movement.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

On high feast days, the entire blue-glass front of this modern church opens up to reveal the small wooden church inside.

The first modernist church in Europe.

One room inside this building mesmerizes all with its parabolic dome.

A steam powered train that runs on city streets.

A taxidermied stork with an arrow through its neck proved that birds migrate.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A kindergarten shaped like a cat with a tail that's a slide.

1898 German railroad depot museum with working engines, steam train excursions, and hands-on displays.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

The location where the iconic movie character declared it was time to go home.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This spire on an Austrian mountain is wrapped around a long spiral slide and has the world's tallest wooden observation deck.