This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

The longest covered bridge in Delaware.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

A monument celebrating the idea of reaching inaccessible places.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Edison's cast-in-place concrete houses were a failure, but way ahead of their time.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Cretean quarry suggests real-life site for ancient Greek myth of the man-eating Minotaur in his labyrinth.

This abandoned Greek island was the last active leper colony in Europe.

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This striking sculpture of Icarus honors Greece's fallen flyers.

This medieval "painted village" is famous for its geometric facades.

This 11th-century Greek monastery has renowned mosaics and relics of a brutal past.

An ambiguous ambience emanates from this centuries old leprosy quarantine.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

A bizarre roadside attraction and the first instance of miniature golf in the world.

One of the best-preserved impact craters on the planet is located in the middle of the Sahara Desert.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

An abandoned Byzantine fortress and notorious prison.