Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

Modern art commemorates one of the first military actions of World War II.

A statue honors the children who fought Nazis in Poland.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The silly symbol for an underground protest group is now scattered around the city.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

The site of the first battle of World War II.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

Mysterious craters may have been home to an ancient cult.

3,000 market stands in five former Zeppelin hangars.

A black cat protests the City Guild in Riga's Old Town.

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

This unique Lady Liberty is one of the only examples of the figure sitting down.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

When you've got to go, you've got to go.

340-foot statue built to honour the Heroes of the Soviet Union.

This derelict superstructure was a very important warning system for the Soviet military.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.