WASHINGTON - Friday marks the official opening of the newly constructed National World War I Memorial site in Washington, D.C.The opening of the WWI memorial on Pennsylvania Avenue near the White House comes after years of planning.Download the FOX 5 DC News App for Local Breaking News and WeatherNational World War I Memorial The memorial recognizes the nearly five million Americans who served in the war and is the first memorial to WWI veterans in the nation’s capital.Situated in a refurbished Pershing Park, the memorial features a nearly 60 foot long bronze sculpture that depicts scene and imagery of service members..