 Square – Brussels Convention Centre is housed in the former Palace of Congress, which was designed by Jules Ghobert and Maurice Hoyoux and built in 1958 for the World's fair.Managed at the time by the National Congresses Service, the Palace of Congress consisted of several subterranean spaces, including 1,200-seat and 300-seat auditoria, plus rudimentary exhibition spaces.Although upgraded both technologically and aesthetically in 1978, the infrastructure of the Palace aged through the 1980s and 1990s.