A ghost town left high and dry in the mountains of Colorado, a marooned facility in the waters off England's south coast, the remnants of a sprawling industrial enterprise in Puerto Rico where locals struggled under colonial rule, and a remote village on the island of Cyprus that couldn't escape the clutches of war.

Exploring a beachside resort with ties to the Russian mafia, a windswept base hiding lifesaving technology, and a site in Iowa plagued by its past.