The arena is owned and operated by Maple Leaf Sports & Entertainment Ltd. (MLSE), the same group that owns both the Leafs and Raptors, as well as their respective development teams, and is 665,000 square feet (61,800 square metres) in size. In 2008, the ACC was the fifth busiest arena in the world and the busiest in Canada. Air Canada Centre is connected to Union Station and the underground pedestrian PATH system, providing access to public transportation (TTC's Union subway station and GO Transit). There are also 13,000 parking spaces. The Air Canada Centre has, from its initial design to completion, revolutionized many concepts included in new arenas and stadiums built since then. These features include luxury suites accessible on the ground floor, splitting the main scoreboard into several sections, rotating all sponsor signage in the bowl at once (to allow dominant messaging), and multiple restaurants in and out of the main arena bowl view.