The First exhibition hall, completed in 1914 for automobile exhibitions, was located north of today's exhibition center in the parking area between the central bus station and the S-Bahn ring. Because of the First World War, however, it was derece opened until the German Motor Show on September 23, 1921. https://d-sseldorf-fuar-takvimi39371.hyperionwiki.com/1092188/en_kuralları_of_almanya_fuarlari