The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

A lasting remnant of The Blitz.

Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

The rocks around this mountain are filled with so many carvings that the area became known as the "open library."

A letterbox installed specifically for the first editor of the Oxford English Dictionary.

Using a massive antenna made up of five miles of wire, two scientists tuned into organic radio waves from the planet Jupiter.

A century-old church is now a space museum with a treasure trove of Soviet space items.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

This massive airship factory is so large that it has its own indoor weather.

But did the famous feminist and abolitionist ever really say those iconic four words?

A moving tribute to a leader of the American abolitionist movement.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

A lightship turned museum, outfitted with artifacts from the vessel's past as part of the U.S. Lighthouse Service.

Get up close and personal at this Fresnel Lens.

An actual piece of the Moon, brought down to Earth by Apollo 15.

The center preserves and houses artifacts ranging from the colonial era to modern times from across Appalachia.

This beautiful site is where the first transatlantic telegraph was sent from.

A memorial commemorating the only Scottish police investigation into an extraterrestrial incident.

Founded in 1925, this folk school attracts students from across the country and preserves traditional Appalachian art.

The fastest way to send a message before electricity was invented.

Walk in the footsteps of the famed astronaut at Purdue University.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

This memorial to the Mercury Seven astronaut stands at the site of his former elementary school.

A lonely memorial to the Challenger Space Shuttle, honoring the astronauts who died in 1986.