Known as the "silent twins," June and Jennifer Gibbons barely talked to anyone except each other — for nearly 30 years. But then, one twin died under mysterious circumstances. (Read more in 1st comment)

Matching suits, cryptic notes, and handmade lead masks? Unpacking one of the strangest unsolved cases of the 20th century. (Read more in 1st comment)

A Roman bath still in use in Khenchela, Algeria, estimated at about 2000 years old.

A Brazilian gang leader Clauvino da Silva tried to escape from prison by dressing up as his daughter when she visited him behind bars and walking out the penitentiary's main door in her place. (Read more in 1st comment)

The Sedlec Ossuary is a Catholic Chapel in the Czech Republic, which contains the skeletons of 40,000 - 70,000 people, whose bones have been artistically arranged to decorate the chapel, yielding macabre appearance.