What is the famous building Oak Ridge was famous for in world war 2?

Oak Ridge, Tennessee, was famous for the Oak Ridge National Laboratory and, more notably, the Y-12 National Security Complex, which played a crucial role in the Manhattan Project during World War II. The facility was responsible for the production of enriched uranium for the atomic bomb. This secret site was part of a larger effort to develop nuclear weapons, significantly impacting the outcome of the war. The work conducted here was pivotal in advancing nuclear science and technology.