Rotterdam Ahoy (formerly known as Ahoy Rotterdam or simply as Ahoy) is a convention centre and multi-purpose indoor arena located in Rotterdam, Netherlands. Opened originally in 1950, the current complex consists of three main venues: a fairs and event hall, a congress and conference centre, and the Ahoy Arena. The latter (informally known as the Sportpaleis, lit. 'Sport Palace') opened on 15 January 1971 and is the largest venue, with a capacity of 16,426 as of April 2019.