Union Square

Union Square is an 11-acre public plaza at the foot of Capitol Hill in Washington, D.C., United States. It encompasses the Ulysses S. Grant Memorial and the 6-acre Capitol Reflecting Pool and is just west of the United States Capitol building. Views differ as to whether the Square is just east of the National Mall or is itself the eastern end.

Interstate 395 transits the Third Street Tunnel just beneath Union Square. The George Gordon Meade Memorial formerly stood in the northwest section of Union Square; that memorial now stands near the intersection of Constitution Avenue and Pennsylvania Avenue, NW.