![](https://static.dezeen.com/uploads/2018/01/mercedes-benz-stadium-hok-architecture-atlanta-georgia-usa_dezeen_sq-411x411.jpg)
Watch the Super Bowl 2019 stadium roof close "like a camera aperture"
This time-lapse footage shows the petals atop Atlanta's Mercedes-Benz Stadium, which is hosting the 53rd Super Bowl game today, slide past each other to cover the American football pitch below. More