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.

There is no prison more prolific than Alcatraz, so it should come as no surprise that some of its past inmates have been equally notorious. Alcatraz Penitentiary was the country's premiere maximum ...

Gilles Sabrie/LightRocket/Getty Images Ai Weiwei has never been to Alcatraz, but he has spent three years constructing the infamous island prison in his mind. Sitting at a long wooden table within ...