The National World War I Memorial is a national memorial commemorating the service rendered by members of the United States Armed Forces in World War I. The 2015 National Defense Authorization Act authorized the World War I Centennial Commission to build the memorial in Pershing Park, located at 14th Street and Pennsylvania Avenue NW in Washington, D.C. The park, which has existed since 1981, also contains the John J. Pershing General of the Armies commemorative work. Wikipedia