A monument marks the location of the first successful steamboat demonstration.

One of the only memorials dedicated to journalists who died in combat.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This abandoned sea fort has become an accidental bird sanctuary.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

A museum dedicated to exhibiting remarkable outsider art.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

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

This pun was simply waiting to come to life, and one defense contractor made it so.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

The "lovely red Vega" of the legendary record-settling pilot.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

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

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

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

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

The site of the climactic scene from the classic horror film is now a historic landmark.