The most accurate timepiece in the world.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

Perhaps the most scandalous statue of America's first president.

Obscure Freemasons still live in D.C.’s largest private residence.

The house where John Wilkes Booth conspired with his co-conspirators.

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

When it opened during the final years of the embargo, all the drinks and cigars were free.

The national park was once a plantation estate.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

With a crest near 10,000 feet, this treeless fault-block mountain in eastern Oregon provides stunning views and spectacular glacial landforms.

Fifty years after a “blast blasted blubber beyond all believable bounds,” this idyllic natural area commemorates the carnage.

A stunning landscape of bunkers that once stored chemical weapons.

The victims of a free-floating Japanese bombing during WWII are remembered by this stone monument.

Journey through a bit of nostalgia inside this classic record and video store.

All aboard the world's longest miniature railway.

Portland had a unique approach to Cold War-era protections.

Post office plaque commemorates local resistance to a cult invasion.

World's only nuclear reactor operated by liberal arts undergraduates.

Statues of Ramona Quimby, Henry Huggins, and Ribsy the dog in the park where their adventures "really happened."

A tourist attraction founded around a slumping cabin.

An early-19th-century hotel with a past that is steeped in the Civil War.

Located in the place where the Columbia space shuttle came down, a museum-memorial that is both touching and informative.