Mystery

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

No one knows the origins of the mysterious stone ruins discovered on a hillside in Halifax.

The mysterious headstone of an unidentified bank robber was seen visited, every year, by a woman in black.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

An enigmatic modern marker left next to a historic Roman site.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

The nude sculpture on this fountain shocked conservative townsfolk when it was first unveiled, but not as much as the dead body found in it decades later.

A mysterious spot where the laws of gravity seem not to apply.

An unexpectedly extraterrestrial room in a former Victorian resort club.

A remote gravestone on the moor marks the spot where a teacher's body was found under mysterious circumstances that remain inexplicable.