Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner ...

California is also home to the most haunted location in the U.S. Alcatraz, the famous island-prison outside of San Francisco, garnered over 2 million search results on Google – the most of any ...

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 ...

Although best known for its 29 years as a federal penitentiary ... some of Alcatraz’s most dangerous inmates have been held. They left, says Kelsey, with a ghost story or two — as well ...