Nationals Park is a baseball park along the Anacostia River in the Navy Yard neighborhood of Washington, D.C. It is the home ballpark for the Washington Nationals, the city's Major League Baseball franchise. When the Nationals franchise relocated to Washington, D.C., they temporarily played at RFK Stadium until Nationals Park was completed. It is the first LEED-certified green major professional sports stadium in the United States.
The ballpark, designed by HOK Sport and Devrouax & Purnell Architects and Planners, cost $693 million to build, with an additional $84.2 million spent on transportation, art, and infrastructure upgrades to support the stadium for a total cost of $783.9 million. The stadium has a capacity of 41,339. The Washington Monument and the Capitol building are visible from the upper decks on the first base side of the field.
The park's name echoes that of the early-1900s ballpark used by the Washington Senators, National Park, until it was rebuilt and renamed Griffith Stadium.
Nationals Park hosted the 2018 Major League Baseball All-Star Game, the first All-Star Game to be played in Washington, D.C. since 1969.