A submerged archeological park still holds the wonders of a Roman Sodom.

The former Naval shipyard is open for exploring - mostly.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

This World War II bunker is now a shrine covered with sea shells.

An 800-year-old island castle in Guernsey's main harbor.

The first island in the world designated a light-pollution-free astronomical observation point.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

The biggest and deepest Cold War bunker open to the public can be found in southeast England.

This Roman relic was discovered in Scotland by a mudlarking ferryman.

A toxic ghost town sitting atop a massive coal fire.

Once swallowed by flood waters, this village has emerged as an eerie shadow of its former self.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

One of the final concrete ships built before World War II is now a crumbling breakwater.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

Terrifying derelict military hospital once housed a recuperating Hitler.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The largest preserved walking dragline excavator in Western Europe.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

This sculpture is dedicated to Minnesota natives who served in combat.

The Real LegoLand.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

20,000 pieces in a Frank Gehry-designed building.