GETTYSBURG, Penn.—The 1884 Gettysburg Cyclorama has been fully restored for the public after a five-year and $15 million collaborative effort by the National Park Service and the Gettysburg Foundation, according to the Washington Post. After years of neglect, cropping, and overpainting since going on display in Gettysburg in 1913, the cyclorama, a landmark circular painting titled The Battle of Gettysburg by Paul Dominique Philippoteaux, has been restored to its original 377-foot-by-42-foot size and installed in a new rotunda.

Originally opening to critical acclaim, the newly restored painting has inspired mixed reactions as to its merit among critics, with Philip Kennicott of the Post calling it a “huge dinosaur of a painting” and an “occasionally dramatic, but hardly great painting.” It remains historically important, however, as a complete recreation of the storied Gettysburg battle, a foray into panorama painting, and the only traditional cyclorama in the U.S. today.

The restored cyclorama will be unveiled for viewing, along with the opening of the battlefield’s new visitor’s center, on September 26. Visitors will be able to get the full 360-degree, three-dimensional viewing experience by standing on an elevated platform.