Actual situation in Europe according to ICCA: Vienna is the number one (181 conferences per year) followed by Paris (174 conferences per year) Barcelona (150 conferences per year) Berlin (147 conferences per year) and Singapore (142 conferences per year). Runners up Madrid (130 conferences per year) London (115 conferences per year) Amsterdam (114 conferences per year) Istanbul (113 conferences per year) and Beijing (111 conferences per year)