When properly displayed in its cylindrical format, it's a wraparound experience akin to virtual reality, Small sculpted figures in the foreground to add to the illusion.
According to the New York Times, the painting "was prepared in Milwaukee by a team of German artists and was completed in 1886, when cycloramas...were a leading form of entertainment, and the colossal works traveled the country."
But over the years, it has fallen into neglect. Fortunately $35 million has been raised to restore it and to move it to a new home.
New York Times: On a Mission to save Atlanta's Civil War Cyclorama
Atlanta History Center