Luxurious contemporary 11-story 1096 room airport hotel with 4 mirrored glass towers and 10-story atrium lobby with lighted glass elevators. Complete with O H American Grill Sushi in Red Bar Red Bar and Perks. Glass enclosed Skyway connects Hyatt Regency O Hare to the Rosemont/O Hare Expo Center. Full service business center available to all guests. One of the largest ballrooms in the Midwest filling the entire 2nd floor atrium.