SummerSlam is a professional wrestling pay-per-view (PPV) event, produced annually in August by professional wrestling promotion WWE. The inaugural SummerSlam took place on August 29, 1988 at Madison Square Garden in New York, New York and was broadcast via pay-per-view, unlike the Royal Rumble of that year which was broadcast as a television special on USA Network. Dubbed as "The Biggest Event of the Summer", it is one of the original "Big Four" pay-per-view events of WWE (along with WrestleMania, Royal Rumble and Survivor Series). Although the Royal Rumble generally attracts a larger viewership, SummerSlam has been touted by WWE as their second biggest event of the year after WrestleMania. From 2009 to 2014, SummerSlam remained exclusive to Staples Center in Los Angeles. In 2015, the event took place in the New York City borough of Brooklyn, where it will return for the next two years.