The Capitol Grounds' aka Capitol Park (I), was a baseball field located in Washington, D.C. The grounds were the home field for the Washington Nationals of the Union Association during the league's only season in 1884. The grounds had a seating capacity of 6,000, and was located where the Russell Senate Office Building stands today. The ballfield was bounded by C Street NE (north); Delaware Avenue NE (west): B Street (now Constitution Avenue) NE (south); and First Street NE (east); a couple of blocks northeast of the Capitol building.
Coordinates: 38°53′34″N 77°00′25″W / 38.89278°N 77.00694°W