GETTYSBURG, Pa. (AP) — The National Park Service says it will tear down the Cyclorama building at the Gettysburg National Military Park that used to hold the 377-foot painting depicting a pivotal moment in the Civil War battle.

The park service has planned to tear down the building since 1999 but the architect Richard Neutra’s son and a preservation group opposed the decision. The court battle over the building has lasted more than three times the length of the Civil War.