Patronaat is one of the 10 largest alternative pop music halls in the Netherlands and was established in 1984. It is located at the Zijlsingel in Haarlem, near the city center. In 2003 the old building was replaced with a brand new concert hall, which was being used for the first time in 2005. Between September 2003 until May 2005 a temporary location at the Oostvest functioned as Haarlem's concert hall.