Even with today's high-tech science, many events and ancient mysteries remain unexplained and surrounded by theories that stir the imagination and challenge scientific fact. This book systematically explores all aspects of the human fascination with the unknowable, from hauntings and the power of the mind, to physical mysteries such as lost civilizations, ancient superstitions and symbols, and the persistent ideas about life from other planets. Evocative illustrations and intriguing photographs, combined with riveting text by an award-winning author, shed light on the world's greatest mysteries.