To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

Acres of English cottage gardens, unexpectedly nestled in a Cleveland suburb.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

The largest earthwork effigy in the world.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Rare recess caves fill this unbelievably beautiful Ohio park.

Take a drunken tour inside the world's largest known geode.

The world's longest known cave system.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Museum dedicated to the terror regimes of Hungary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.