As a recognized organizer of specialized trade fairs with a global impact, Koelnmesse opened the International Service Center in 1981. Since then it has organized trade fair participation all over the world. The exhibition grounds in Deutz were also further expanded by the addition of the Congress Center East. In 1983 a total of 230,000 m² of hall area was available. Starting in 1974, the International Art Market was held in the Cologne trade fair halls; over the years this event evolved into ART COLOGNE.