Walk or bike along a narrow strip of Belgium sandwiched by German territory.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Single runway interrupted by a busy road that cuts across its middle.

The world's largest solar furnace uses 10,000 mirrors to concentrate the sun's rays to generate power.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

A statue beloved by—and named by—the local townsfolk it represents.

An oversized, oddly designed pedestrian overpass has drawn comparisons to a commode for pachyderms.

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

One part local history, 99 parts gruesome haunted house.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Museum dedicated to the terror regimes of Hungary.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Fast food feels like fine dining at this award-winning modern Georgian building.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.