Koelnmesse (Cologne Trade Fair or Cologne Exhibition Centre) is the name of the international trade fair and exhibition center located in Cologne, North Rhine-Westphalia, Germany. With around 75 trade fairs and over 2,000 conferences annually, Koelnmesse is one of the country's largest trade fair organizers and with 284,000 m² exhibition floor area the third largest by areaThe Cologne Trade Fair ground was founded in 1922. Until 2005, the trade fair was based in the historic Rheinhallen, and since then moved into new premises next to them.