It includes a new convention centre and indoor arena with four potential sites: the current County Hall site in Cardiff Bay, the Red Dragon cinema complex nearby, the site of the Brains brewery and Callaghan Square, which are both situated close to Cardiff's central railway station.
The 740, 000 square-foot (69, 000 square-metre) building has a 1, 960 foot long main assembly floor, with a railway line running through the door handy if you are making locomotives.