In Back to the Future the name of the mall changes when Marty goes into the past and runs over one of the two trees 

When Marty first goes to meet Doc Brown at Twin Pines Mall we clearly see that it’s called… “Twin Pines Mall”. After Marty comes back from his adventures in 1955 to see Doc Brown get shot up, the sign reads “Lone Pine Mall.”

Why did it go from twin to lone? The land that the mall is on was owned by Old Man Peabody, remember that? Now remember when Marty time traveled back in time and crashed into their barn? Well, when Marty drves away with Peabody firing a shot gun at him he runs over one of a pair of pine trees in Peabody’s front yard