HOK is an American architecture firm created by architects Gyo Obata, George Hellmuth and George Kassabaum. Founded in 1955, the practice works across architecture, design, engineering and planning. More specifically, HOK has worked across a wide variety of sectors including hospitality, aviation and transport, sports and recreation, retail and residential design. With 24 international offices, the firm employs over 1,700 people spread across three continents.
Pictured above is the Mercedes-Benz Stadium in Atlanta, designed to accomodate large-scale entertainment for the city and a new venue for American football team Atlanta Falcons.