A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

Providing the soundtrack to the golden years of the Seattle grunge scene.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A stunning landscape of bunkers that once stored chemical weapons.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

An institution that preserves the history of institutionalization.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

An emporium for the weird, creepy, rare, and just plain gross.

Tens of thousands of tiny birds swarm into one school chimney every fall.

These machines have been collecting dust for decades.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

Home to the only outdoor municipal elevator in the United States.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

A monument to the art of slicing people open.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The palatial McDonald's that inspired Wesley Willis.

Lighthouse-cum-columbarium where "Nor'easters" and grandma go to die.

A massive sea stack famous for its appearance in The Goonies.

One of the smallest towns in the United States.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Massive still life just off the highway in Kansas.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

At 207 feet, one of the world's longest continuous escalators.