In April 1631, during the Thirty Years' War, Frankfurt was the site of the Battle of Frankfurt an der Oder between the Swedish Empire and the Holy Roman Empire. After a two-day siege, Swedish forces, supported by Scottish auxiliaries, stormed the town and destroyed many buildings, e.g. the Georgen Hospital. The result was a Swedish victory. By the end of the Thirty Years' War, the …

Messe Frankfurt (literally "Frankfurt Trade Fair") is the world's largest trade fair, congress and event organizer with its own exhibition grounds. The organisation has 2,500 employees at some 30 locations, generating annual sales of around €661 million. Its services include renting exhibition grounds, trade fair construction and marketing, personnel and food services.