Certainly one of the architectural highlights of Hamburg present , the Congress Center and the hotel tower directly next to it . This is with 108 meters the tallest hotel in Hamburg and also one of the tallest buildings in the Hanseatic city . He has a total of 32 floors , of which 27 are habitable floors and contain 556 rooms and suites . The complex was built in 1970 and 1973 by the architects Jost and Gert Schramm Pempelfort . And he was at his inauguration in 1973 , the first convention center in Germany. Originally housed the convention center has 17 halls with room for 10,000 people . After its extensive renovation in the years 2005 to 2006, the time between CCH has said building more than 23 theaters with 12,500 seats . Also has a garage with 1,000 parking spaces . Used to be the land for conventions, concerts , trade shows and exhibitions . The operator of the Congress Centre Hamburg Messe und Congress GmbH which also runs the adjacent exhibition halls . These are from the CCH to reach a covered arcade through the park Townhall Hamburg .