The early 20th-century home features cutting-edge technology of the day, such as ammonia refrigeration and needle showers.

The largest arcade museum in the world chronicles the golden age of video games which ended promptly in 1987.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.

Like Mars, but much closer.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

A mysterious spot where the laws of gravity seem not to apply.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

This giant Massachusetts sycamore is said to hold the dubious distinction of being the "widest tree East of the Mississippi!"

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

Neither bomb blasts nor heartbeats escape the giant ears of this super sci-fi Arctic outpost.

An experimental forest at the foreground of arboreal science is also the canary in the coal mine for climate change.

One of the world's tallest statues is also one of its most hated.

Stalinist skyscraper built with help of cryotechnology.

Gigantic natural towers in a Russian plateau.

A scale model of Russia so big visitors are offered binoculars to rent so they can see the whole thing.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.

Site of the largest impact event to occur over land in Earth's recorded history.

Legends of time travel and magical woodland creatures bolster the natural charm of this verdant sanctuary in the midst of Moscow.