The United States Capitol's former columns still stand.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

Phil Mortillaro uses keys to bring art back to the Village.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The second-largest giant sequoia in the world.

This small island was the first National Wildlife Refuge ever created in the United States.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

Experience a charming 1930's version of "infotainment."

An ode to one of the dirtiest jobs during the construction of the Boulder Dam.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The longest-covered bridge in the state of Maryland.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

The rusted remains of a victim of Hurricane Ike.

A little slice of Japan and its aesthetics in London's Holland Park.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Washington's iconic carousel has a nice piece of Civil Rights history.

There’s a special club house at the top for the bell ringers.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.