The Monroeville Mall was at middle stage in George A. Romero's Dawn of the Dead. Although the mall has been renovated,you can picture how it looked in the 1970s.
Gone are the fountains, most of the plants that adorned the mall, or escalators,and unfortunately the clock tower has been removed for now. The only original shop that was seen in the movie is the arcade.
Source: atlasobscura.com