Koelnmesse GmbH (Cologne Trade Fair) is the name of the international trade fair and exhibition center located in Cologne, North Rhine-Westphalia, Germany. With around 80 trade fairs and over 2,000 conferences annually, Koelnmesse is one of the country's largest trade fair organisers and with 284,000 m² exhibition floor area the third largest by area. The Cologne Trade Fair ground was founded in 1922.