The US Open tennis tournament is played at the USTA Billie Jean King National Tennis Center, located in Flushing Meadows–Corona Park, Queens, New York City. Since 1978, the tournament has been held on acrylic hardcourts at this venue
. The main stadium at the center is the Arthur Ashe Stadium, which seats 23,771 spectators and has a retractable roof added in 2016. The venue also includes other show courts such as Louis Armstrong Stadium, the Grandstand, and Court 17, along with numerous outdoor courts and practice courts
. This location has been the site of the US Open since the tournament moved from the West Side Tennis Club in 1978. The US Open is the fourth and final Grand Slam tennis event of the year and is held annually starting the last Monday of August for two weeks
