A sobering scientific reminder of the human damage caused by the advent of the nuclear age.

In the city forest of Augsburg are oval, artificial ponds formed from a World War II bombing campaign.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

This nondescript building hides an entrance to an underground nuclear tunnel system.

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

A painfully obvious spy house sits right across the street from the Russian Embassy.

The remains of a paranoid inventor's hidden workshop lie in beautiful ruins amidst a Canadian park.

Canada's subterranean Cold War museum has doubled as a movie set.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

This chimney is the oldest free standing industrial chimney in Britain.

Graham Ibbesons's moving tribute to the victims of England's worst mining disaster.

A churchyard in Ardsley houses a memorial dedicated to the victims of England’s worst mining disaster.

These ruins are a monument to the region's industrial heritage, and the site of England's worst mining tragedy.

These medieval monastery ruins are surprisingly overlooked by most tourists.

This tribute to a beloved cricket umpire is a magnet for risqué pranksters.

Sweden's oldest animated sign is still lighting up the skyline today.

This unique sculpture is often overlooked by pedestrians.

A man has revenged his true love's betrayal through tears and stone genitalia.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

The internet as provided by a James Bond villain.

She asked for a potato cellar and over the next 23 years he gave her a network of holy caves.

An impressive home made of stone, carved more than a century ago.

The site of one of the largest prison escapes of World War II.

A Victorian Fort built into the chalky cliffs that overlook the English Channel.