The city encouraged development projects in University City in West Philadelphia and the area around Temple University in North Philadelphia, it removed the "Chinese Wall" elevated railway, and developed Market Street East around the transportation hub. Some gentrification occurred, with restoration of properties in historic neighborhoods such as Society Hill, Rittenhouse Square, Queen Village, and the Fairmount area. A non profit group Action Philadelphia was formed to improve and promote Philadelphia's image.The airport expanded, the Schuylkill Expressway and the Delaware Expressway (Interstate 95) were built, SEPTA was formed, and residential and industrial development took place in Northeast Philadelphia.