 It is a major route through the city and the metropolitan Delaware Valley, providing access to locally important landmarks such as Philadelphia International Airport, the South Philadelphia Sports Complex, Subaru Park, Penn's Landing, and Philadelphia Mills.Of the 15 states that I-95 runs through, Pennsylvania is the only one that does not border the Atlantic Ocean.Plans for a limited-access route along the Delaware River in the Philadelphia area originated in the 1930s when both a parkway and elevated highway were proposed; neither of these were built.