A ghostly mansion in the middle of downtown Tunis.

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

Built to transport German U-boats through the never-completed Masurian Canal, the locks near this Polish village are now home to a rope course.

This building is a recreation of the gatehouse that separated Los Alamos from the outside world during the era of the Manhattan Project.

This abandoned building, which is the second-largest structure on the Maltese island of Comino, has a complicated past.

A film center envisioned to rival Cannes ended up as a haunted place after at least 168 people were killed during the rushed construction.

This 30-foot-high statue of Christ was intended to be part of a prehistoric theme park.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

On the side of Highway 50 East, between Carson City and Dayton, Nevada, sits a giant metal spider made from a vintage Volkswagen Beetle.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.