This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

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

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

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

This abandoned Belgian fortress is purposefully being left to nature.

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

This ghost town in Belgium will lose its street art when it ceases to exist.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Lavish royal estate punctuated with heated greenhouses.

The hidden ruins of an old hydroelectric plant reclaimed by nature.

The ruins of an ancient Celtiberian town with incredible rock-cut buildings and a Roman aqueduct.

This Arab fortress was once the largest citadel in Western Europe.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.