Manchester Central Convention Complex is an exhibition and conference centre converted from the former Manchester Central railway station in Manchester, England. The building has a distinctive arched roof with a span of 64 metres – the second-largest railway station roof span in the United Kingdom, and was granted Grade II* listed building status in 1…Manchester Central Convention Complex is an exhibition and conference centre converted from the former Manchester Central railway station in Manchester, England. The building has a distinctive arched roof with a span of 64 metres – the second-largest railway station roof span in the United Kingdom, and was granted Grade II* listed building status in 1963.