Olympic Stadium (Montreal)

The Olympic Stadium, often referred to as the "Big O" (a nickname initially coined as a play on words referencing both its shape and the 1976 Olympics, but later acquiring sarcastic connotations due to cost overruns and structural issues), is a multi-purpose stadium located in Montreal, Quebec, Canada. It was originally constructed as the main venue for the 1976 Summer Olympics.

Following the Olympics, it served primarily as the home of the Montreal Expos Major League Baseball team (until their relocation to Washington, D.C. in 2004) and the Montreal Alouettes of the Canadian Football League for a time. It has also hosted various other sporting events, concerts, trade shows, and exhibitions.

The stadium is notable for its distinctive design, particularly its retractable roof, though the roof experienced significant problems and was often inoperable. The stadium's tower, one of the tallest inclined structures in the world, supports the roof and houses an observation deck.

Despite its controversial history related to construction costs and roof malfunctions, the Olympic Stadium remains a prominent landmark in Montreal and continues to host large-scale events. The stadium is part of the larger Olympic Park complex, which includes other facilities built for the 1976 Games.