For your dining pleasure, the Greenery restaurant offers a wide selection of menu options, open Mon Fri 6:30 AM - 9 PM; Sat & Sun 7 AM 9 PM. At the Holiday Inn Greentree, we specialize in meetings, weddings, banquets, reunions or any type of event. With nearly 11,500 square feet of flexible meeting space and 3 ballrooms, the experienced staff will make your event a success.Located near Heinz Hall, Benedum Ctr., Carnegie Science Center, Heinz History Ctr., Kennywood & Sandcastle Parks, Pittsburgh Zoo, Andy Warhol Museum, & Natl Aviary.