Support The National WWII Museum on RYOT.org. The National WWII Museum in New Orleans opened on June 6, 2000, as The National D-Day Museum. Founded by historian and author, Stephen Ambrose, the Museum tells the story of the American Experience in the war that changed the world — why it was fought, how it was won, and what it means today — so that all generations will understand the price of freedom and be inspired by what they learn. In 2003, Congress officially designated us as America’s National WWII Museum. The National WWII Museum is an private 501c3 corporation.