The celebrated eyesore created by starry-eyed sweethearts.

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

Metro station with a claim to rock n' roll fame.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Eighty million natural history specimens call this gargantuan museum home.

The curios of pharmacist and collector Henry Wellcome.

There must be a pun in this haystack somewhere...

Commemorating the spot where the famous scientist fed his pigeons.

Elevated freight railway turned wildly successful urban park.

An artist's cute bronze subway sculptures belie his violent artistic past.

A decommissioned military complex that's now a modern industrial park.

A terrific purveyor of natural history objects and curios.

The tiniest little stage in New York.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Haven for steampunks.

Home of the International Space Hall of Fame.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This is one really big nut.