Swampoodle Grounds

The Swampoodle Grounds were the home of the Washington Nationals of the National League from 1886 to 1889. The park was named for the Swampoodle neighborhood, a former neighborhood in Washington, D.C.. The ballpark was located on North Capitol Street, between F and G streets, where Union Station and the National Postal Museum now stand. The Baltimore and Ohio railway line ran behind the left field stands.

The ballpark had a capacity of 6,000 and the Capitol Building was visible from the seats. It was also known as Capitol Park II, as this park was just a few blocks away from the Union Association Nationals' old home, Capitol Park.

The infield was in good condition, but the outfield only had sparse grass.