A man-made island designed to look like a massive battleship.

A Japanese pilot crash-landed on this Hawaiian island after the Pearl Harbor attack and terrorized locals for a week.

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

This shop for all your super spy needs hides an educational secret.

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

A natural gas leak provides a flickering flame beneath a waterfall.

The angel of death appears to weep black tears at this grave marker.

America's oldest archaeological site or a muddled case of wishful thinking.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The tallest unclimbed mountain in the world remains poorly charted out of respect for local spirits.

This iconic Russian space museum sits on a landmark space production facility and houses the Vostok 1, the first manned spacecraft, that was also built here.

A battle between nature and architecture in the Cambodian jungle.

The once great capital of Egypt now crumbles forward as evocative ruins.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

The bodies of some early polar pioneers are still buried beneath the harsh snows of the Antarctic.