This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.

A historic arena where the Beatles played their first concert in the U.S.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

The span is crooked and made from two older recycled bridges.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

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

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

The national park was once a plantation estate.

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

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

A historic neighborhood church is reborn as a psychedelic arts collective.

The United States Capitol's former columns still stand.