Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Recorded as the first person buried in Arlington Cemetery.

An eponymous directional signpost erected by the first president of the United States.

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

The rogue roots are gradually consuming some of the historic marble grave markers.

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

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

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

The highest point in Virginia can only be reached by passing through ponies and flowers.

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

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

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

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

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

A picture-perfect town, perfect for blowing up.