This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

This museum celebrates a legendary railroad photographer whose personal life was as dramatic as his photos.

An overgrown collection of miniature buildings still stand as evidence of one couple's obsession with The King.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

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.

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

Home to items never before seen by the public.

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.

Though his role as the inventor of baseball may be up for debate, fans still festoon Doubleday's grave with baseballs.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

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

Decades before the scandal, this staircase on the river was a literal "water gate."

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

There’s a hidden military meme engraved on the World War II Memorial.

An overlooked memorial honoring the local Washington residents who died in World War I.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.