Designed by Victor Prus, the station is a normal
side platform station, built by
cut-and-cover in order to provide a large space for the heavily trafficked
mezzanine. As a key part of the
underground city, the mezzanine has
ticket barriers on either side to allow pedestrians to pass from one end of the station to the other side.
Footbridges over the
tracks below the mezzanine level allow passengers to cross from one platform to the other. Until 1992, the station had only one outdoor entrance, in front of
Windsor Station, and two additional accesses led directly to
Place Bonaventure and
Montreal Central Station (Gare Centrale) on one end and to the
Château Champlain and Place du Canada on the other. When
1000 de La Gauchetière was built almost directly above the station, additional accesses were added to the office tower and to the
Downtown Terminus (metropolitan bus terminal for
Réseau de transport de Longueuil and
South Shore buses) within it, as well as a street entrance on the western side of the building on Cathédrale Street and improved access to Central Station and Place Bonaventure. The station is intermodal with the
Réseau de transport métropolitain (RTM)'s
commuter train lines through its underground access to
Montreal Central Station, the terminus for
Mascouche and
Mont-Saint-Hilaire lines. Eventually, it connected to the
Réseau express métropolitain network as well. There is also underground access to the
Lucien-L'Allier train station and to the
Lucien-L'Allier Metro station.
Elevators were added between the mezzanine and the platforms in November 2009, which mader the station more accessible to people with reduced mobility. However, no step-free access to the surface was possible until 2019, when elevators were added connecting the mezzanine level to Terminus Centre-Ville and to the lobby of 1000 De La Gauchetière. This was criticised in the media. The elevators do not allow passengers to change platforms unless they exit the ticket barriers. Another elevator connecting the station to Place du Canada and the Château Champlain was once the only elevator in the system; it is separated from the mezzanine level by steps. The station is equipped with the MétroVision information screens, which display news, commercials, and the time until the next train. ==Origin of the name==