This past week I went for a walk at Forest Hill Cemetery in Madison, Wisconsin. The oldest graves date back to the 1850s-1860s, many of them resting places for native-born Irish, the first settlers in the area.
Most old cemeteries in the eastern half of the United States have sections devoted to casualties of the American Civil War (1861-1865). I was startled to discover this cemetery also has a separate graveyard for Confederate soldiers! They were members of the 1st Alabama Infantry Regiment.
This Confederate cemetery is apparently the northernmost one in the country. The reason for its existence in Wisconsin is explained on the bronze marker above, and at this link and this link.
Addendum: Updated from 2009 to add this video of a local group ("The Whiskey Farm") singing a tribute to the Confederate soldiers (lyrics here. Warning: audio autostarts).