Since it opened as the D-Day Museum in 2000, this Smithsonian-affiliated institution has expanded into an exhaustive look at American campaigns during the Second World War. You could spend multiple days here, but if you want the highlights, head to either the "Road to Berlin" or "Road to Tokyo" wings for an immersive, emotional account of European and Pacific theaters of battle. After that, the US Freedom Pavilion displays a number of authentic land, sea, and air vehicles to ogle, perfect for the 5-year-old in all of us. Once you're properly wrung out, recuperate at the on-site restaurant and bar, The American Sector. Its sandwich-and-salad heavy menu is not in German and there are plenty of Southern favorites like a crispy oyster BLT. Like MacArthur, you shall return.