Cyclorama

At the Cyclorama you'll see the Civil War's Battle of Atlanta, a bloody event that cost 12,000 American lives and led to the demise of Atlanta. A cyclorama is a theater-in-the-round, giving a 360-degree view of a story as depicted on a massive painting. Only three cycloramas in the world now survive. Atlanta's, built in 1921, is considered the best and permanently hosts the world's largest oil painting. A 3-D diorama in front of the painting adds foreground depth and creates a convincing illusion.