Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner escape routes – and looking at ways to preserve the island for the future.

Read on to learn the secrets of this infamous landmark. Alcatraz had been used to house prisoners since 1859, and by 1900, ...

It was the most secure prison in America—until three men outsmarted the system. Using fake heads, dummies in their beds, and a homemade raft, they escaped Alcatraz and vanished. This is the true story ...