One of the last pieces of legislation President Abraham Lincoln signed before his death in 1865 started the establishment of a National Soldiers Homes system. The 90-acre Milwaukee Soldiers Home campus in Wisconsin is one of the most intact examples of these early soldiers' homes, including the "Old Main" building (pictured here). It was used as a veterans' residence until the 1970s, and the peaceful, park-like site is now used frequently as an education center, hosting school groups and even re-enactors from the Civil War to the Vietnam War. The place now faces threat of demolition, or collapse from extensive roof and water damage.