Places meltingknight Wants to Go

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

The shape of this old salt factory complex was inspired by the course of the Sun.

The runoff from these fiery cliffs sends red water flowing into the sea.

The second largest in the world, this massive underground void has its own subway.

The second-deepest known cave on Earth, hidden in an extremely remote mountain region.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

Sofia's legislative center is continuously reinventing itself.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

Ruins of a former government building destroyed during the Georgian-Abkhaz war in the wake of the fall of the Soviet Union.

Christ's blood allegedly preserved in a Belgian town.

These rustic holiday homes are made from discarded fishing boat hulls.

Thanks to its heroic service during WWII this Soviet castle has been turned into a monument towered over by a brutalist titan.

A 200-year-old prison that now houses a peculiar crime museum.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A small museum in this border city displays the contraband art that has been stolen back from smugglers.

An unexpected canine grave atop a mountain.

Small rustic cabin nested in the mountains of Killington, Vermont.

This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

Two distinctive homes on a New England village green look like a couple of frosted wedding cakes.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

The highest peak in the state of Vermont has some interesting features.

This seemingly charming home memorializes and honors the victims of a century-old unsolved murder.

Driftwood dinosaurs lurk within trees covered in a rainbow array of avian abodes.