Champlain Atlas Missile Silo, New York

Less than half a mile from the border is a former Atlas F Missile Intercontinental Missile Silo, operational in the 1960s to protect America from Soviet attack. It is one of several historic missile silos within a mile of the Canadian Border, including another near Alburgh, Vermont. The current owner of the silo bought it off of Ebay in 2006, and is working on restoring it (though without the missile).