This shop for all your super spy needs hides an educational secret.

A lush green oasis in the middle of Chicago.

These barriers stand as stark reminders of Northern Ireland's troubled past.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The embalmed remains of the communist leader lie within a custom crystal coffin.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A restaurant and observation deck built in a unique broadcasting antenna.

The most visited, and possibly most controversial, museum in Germany.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

World's only nuclear reactor operated by liberal arts undergraduates.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

An exotic wildlife habitat right off The Strip.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.