SoFi Stadium, Los Angeles

SoFi Stadium, completed in 2020 at a cost of $5.5 billion, stands as the most expensive stadium ever built, outpacing #2 Allegiant Stadium by over $3.5 billion. Designed by HKS Architects, it seats 70,240 spectators under a translucent ETFE roof — the first fully enclosed, climate-controlled outdoor NFL stadium. The 6,000-square-metre video board is the world's largest in a sports venue, 30% larger than the average venue screen, delivering an immersive experience for every fan.