Resembling a giant white beetle, the Rogers Centre (named after a local media and cable colossus) is a more significant building than the Air Canada Centre, and also has a more arresting tour. The walking tour, which starts with a 15-minute film about the construction, varies according to what's happening in the stadium, but, in addition to the boxes, media centre and memorabilia room, it can include a walk on the field, or a tour of the amazing roof. When the stadium opened in 1989, the fully retractable roof was the only one of its kind in the world. An efficient, quiet rail system allows it to open or close in only 20 minutes. The stadium holds up to 70,000 people, though few events actually draw that many fans, especially since the decline of resident ball team, the Blue Jays. One thing the tour does not cover is Toronto artist Michael Snow's sculpture, The Audience, on the outside of the stadium. You can find this frieze of 14 spectators high on the north-east corner of the building.