A mountain of conch shells created by centuries of fishermen.

Divers can encounter an abandoned warship encircled by a giant kraken submerged in the British Virgin Islands.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

The last planned Soviet city was built for the former residents of Pripyat after the Chernobyl disaster.

This attraction was abandoned after the Chernobyl disaster.

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

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

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

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

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

Once the most densely populated place in the world, this island is now a ghost town.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A war-torn Olympic relic is being overtaken by graffiti and nature.

Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

Egyptian Revival obelisks still rise over the old mine shafts.

One of Detroit’s oldest blues clubs stands in defiance of the passage of time and the city’s shifting fortunes.

The site where Michigan launched its first rocket into space lies abandoned in the dense woods along Lake Superior.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

During WWII the U.S. Navy conducted primitive drone strikes on this Lake Michigan lighthouse.