The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

It's good luck to be mocked by this monkey.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

A monument to the two U.S. officers killed by North Korean troops while trying to trim a poplar tree.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

A statue honoring 44 continuous years of greeting passing ships.

This kitschy tavern is also home to rare early editions of "Treasure Island."

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

For nearly a year, General Ulysses S. Grant was based here during the American Civil War.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

A prison-like structure guards the remains of a notorious Old West outlaw.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

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

Toxic waste disaster that founded the Superfund program.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This one-room cabin where the young colonel slept during the French and Indian War.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.