Most of INHP's buildings and land are contained within the broad plaza called Independence Mall, which is bookended by the National Constitution Center on the north, Independence Hall on the south, and Fifth and Sixth Streets on the east and west, respectively. The Mall was created in the 1950s by city planner Ed Bacon to bring an open space to the heart of historic Philadelphia in front of Independence Hall. Most of the buildings that previously occupied the site of Independence Mall were late nineteenth-century buildings that replaced earlier buildings destroyed by fire in 1851 and 1855. Proponents of the mall thought these buildings were eyesores because of their contrast with the historic nature of the area. As plans emerged, retailers on Market Street resisted, arguing that the demolition was out-of-scale with the comparatively small landmark at its southern end.