The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Barça football fans might see the insignia hidden in a church window as a divine sign.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

Be(w)ar(e) the moat around this historic Czech castle.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

This artificial cave looks like something out of a fairytale.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

The first museum in the world devoted to sexual gadgetry.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

A Museum of Psychiatry in a still-operating mental institution.

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

This abandoned Belgian fortress is purposefully being left to nature.

Hiding the longest subterranean river known in the world.

Meet the bronze beloved pet to a family of famous peeing statues.

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