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

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

A Cold War command center is hidden under an idyllic countryside.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

The foundations of a forgotten fortress, wedged in between two streams.

A moving memorial to the fallen and missing from WWI trenches.

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

Sculpture designed by Turkish artist and professor Mehmet Ali Uysal.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

An ancient ossuary in Rouen.

His "Lionheart" is entombed separately from the rest of his body.

Where once there was a train station bathroom, there is now this German burger joint.

A fascinating insight into daily life in the Eastern Bloc.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

Medieval ruins on a tiny island amid a flooded lake offer romantic respite to lovers seeking privacy.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

The mass grave of the 27 victims of the "Vampire of Hanover."

The natural mummy of the less than chivalrous Knight Kahlbutz.

Over 12,000 hygiene oriented objects and exhibits.

An homage to the humble watering can.

Fantastic views and thousands of love locks.