ATLANTA, GA - JULY 15: General view of Mercedes-Benz Stadium prior the matchup between the Atlanta United and the Seattle Sounders FC 2 on July 15, 2018 in Atlanta, Georgia.  (Photo by Michael Chang/Getty Images)

Roof at Mercedes-Benz Stadium in Atlanta finally open for business

With a few shorts blasts of a horn, the intricate steel structure came to life. Slowly, the eight mammoth pods above Mercedes-Benz Stadium began to slide along railroad-like tracks, revealing the towering downtown skyline off to the east, the glimmering gold dome of the state capitol to the south, and a brilliant blue sky sprinkled with puffy, white clouds overhead.