The US Open is one of the four major championships in professional tennis, known as the Grand Slam tournaments. It takes place annually in late August and early September at the USTA Billie Jean King National Tennis Center in New York City. The tournament features men's and women's singles, doubles, and mixed doubles events, attracting top players from around the world. Established in 1881, the US Open is the oldest of the Grand Slam tournaments. It is played on hard courts, specifically the DecoTurf surface, which provides a fast-paced game. The event is famous for its vibrant atmosphere and large crowds, making it a highlight of the tennis calendar.