Hear the quietest sound from across the dome.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

100 years later, they're still down there.

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

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

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.

The walls of the iconic dome are hollow and have a secret stairway.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

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

Mysterious stone tower featured in many alternative histories of the New World.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

One of 100 “Whaling Wall" murals painted in 13 different countries by a renowned marine life artist.

This 19th century granite fortification is one of the most well preserved forts in New England.

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

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

A museum dedicated to the history and exploration of both popular music and science fiction.