The Knoxville National Cemetery was established in 1863.
Location: 933 Tyson Street, Knoxville
This date comes from the Knox County GIS website. It features a PDF list of "Historic Sites of Knox County, TN."
The website for the Knoxville National Cemetery has this information about its history:
"Union Maj. Gen. Ambrose E. Burnside established the cemetery during the Civil War after the siege of Knoxville and subsequent Battle of Fort Sanders.
Capt. E.B. Chamberlain, the assistant quartermaster, was assigned the task of designing the national cemetery at Knoxville. The first interments were remains exhumed from Cumberland Gap, Concord and many other regional sites. Chamberlain’s design and system for recording interments was so effective that, in 1866, Gen. E.G. Whitman, observed that the cemetery had been 'the only burial ground of Union soldiers…originally laid out and conducted to the present time in a manner and on a system that render[ed] it suitable to be converted into a national cemetery without material alteration or change, or removal of a single body.'
Knoxville National Cemetery was listed on the National Register of Historic Places in 1996."