At 207 feet, one of the world's longest continuous escalators.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

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

The only Leonardo Da Vinci painting in the Western Hemisphere.

Look closely and you’ll notice that the color changes a third of the way up the tower.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The oddly shaped, steam-spewing building is now an art studio and gallery.

Founded in 1961, this comic shop is said to be the oldest in the world.

Deep into the lower floors of Pike Place, find a date with fowl fate.

A wall of chewing gum moonlights as collective art.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Sway your way across Virginia’s longest river on a rickety wooden bridge.

The only recreation of William Shakespeare's indoor playhouse.

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

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

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

An abandoned textile mill that is now home to art and concerts.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

A bright little alley in La Boca is a part of tango history.