A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Washington's iconic carousel has a nice piece of Civil Rights history.

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

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

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

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

Home to items never before seen by the public.

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

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

Over fifty whirling pools left by the glacial age.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

The mansion home of author Edith Wharton.

An eccentric inventor's castle home with its own indoor weather system.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.