An extraordinary "City of Caves" carved from solid stone.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

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

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This massive monument has been telling the time for 150 years—at a slight angle.

Belfast's namesake river still winds below the city center, hidden from sight.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

The world's largest collection of the world's largest objects is in one small Illinois town.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

Less a museum than a bizarre fantasy world created by artists and engineers.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Climb to the top of the world's largest seated bronze Buddha.

This restaurant proudly displays bread signed by the 39th president.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.