Union Soldiers at Petersburg - compares favorably with scenes in Cold Mountain
The Crater
The Spencer Repeating Rifle
Sherman's march through the Carolinas from
Joe's SC Railroads Research Page which is a pretty cool site done by a history and rail enthusiast in South Carolina.
The Line of Lee's Retreat
The McClean House where Lee surrendered the Army of Northern Virginia to Grant. (At least a re-creation / restoration) Near Appomattox Courthouse, VA.
Ford's Theater at the time of Lincoln's assassination on April 14.
Capture of Jefferson Davis