Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

What was once a bustling mining installation is now a bustling hub of contemporary art.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

A wonderfully kitsch bookstore the size of a supermarket.

A once-magnificent collegiate church is falling into ruin.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

This modern arts center is built around a gem of late-Baroque architecture.

A rare example of World War I trenches from the British front.

This abandoned Belgian fortress is purposefully being left to nature.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Hiding the longest subterranean river known in the world.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

The Devil’s own choice when he needs a drink in Brussels.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Cozy basement bar sports an inventory of over 2,000 beers.