The largest refracting telescope in Europe is housed on the grounds of a former French castle.

The highest rapid transit station in the world.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

A former imperial sea-fortress and Soviet prison.

Largest man-made excavation on earth!

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

Take a schvitz just like an infamous Soviet dictator while his unblinking eye looks on.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

This 15th-century cave complex is one of the very few monasteries to stay open throughout World War II and the Soviet regime.

This oddly shaped building is a surprising Soviet-era crematorium.

Kyiv's answer to Muscle Beach is a Soviet-era gym made from scrap metal.

Images of neighbors past and present guard the streets of this charming alpine village.

As the aging humans of this Japanese village die off one local artisan is replacing them with eerie homonculi.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

This handcrafted, old western-style town is filled with deserted cars, retired movie props, and other forms of Americana.

Cool down and fill up after visiting Teotihuacán at this bar and restaurant in a deep, underground cave.

This former office building has been transformed into an immersive music venue and art space.

Queensland's largest dam includes a winding spillway that offers drivers a mesmerizing sight.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

The former headquarters of a leader in the Mexican Revolution, and the site of an often-reproduced image.

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.