The site of one of the biggest battles of the Gettysburg war with dozens of monuments to show for it.
Vicksburg is a town that is now placed in a time capsule. More appropriately, they're surrounded by the time capsule.
First off, to go backwards, Vicksburg is the site of one of the most important battles of the Civil War. Gettysburg is, of course, probably one of the most famous, but Vicksburg was what Lincoln described as the "key" to ending this war.