For great views of Center City, Penn's Landing, the Delaware River, and Camden, walk the Ben Franklin Bridge. The bridge begins at Franklin Square, on Race Street. There are pathways on either side of the bridge; take the one on the south side of the bridge. It's about 1 km or so from the start of the bridge to the center of the bridge; walking it doesn't take very long. Along the bridge, you can also see the bridge's giant steel cables and its enormous anchorage. From the center of the bridge you can see One Liberty Place, City Hall, the Walt Whitman Bridge, large cargo ships, and the Campbell's logo on the Camden side. I didn't walk the full length, I only went to the middle and went back; don't know what the rest of the view is like.
One thing to note that in case of terror attacks/threats against the US, the Ben Franklin Bridge will occasionally close. You can walk the bridge between 6 AM and 7 PM
The Benjamin Franklin Bridge spans the Delaware River, connecting Philadelphia, Pennsylvania and Camden, New Jersey. The bridge was once named the Delaware River Bridge (for obvious reasons) and was completed in 1926; at the time of its completetion, the 1,750-foot span between the two towers of the bridge made it the longest suspension bridge in the world. The bridge is made of a few compenents, including the I-676 roadway, two elevated walkways, and a PATCO railway from Camden to Philadelphia. The bridge is visible from many parts of the city. There are seven automobile lanes on the bridge; crossing from Camden to Philly, there is a $3 toll, but from Philly to Camden it is free.
Once in Old City Philadelphia, particularly near the river, it's pretty hard to miss the Ben Franklin Bridge -- the bluish monolith spanning the Delaware River into Camden. When completed in 1926, it was the longest suspension bridge in the world, and even today it's impressive.
While its main purpose is to carry commuters between the two cities, either by car or by rail, pedestrians can also it either as a conveyance or as a photo stand. As noted in the URL below, either one or the other walkway is open to walkers, with no charge or time limits. The normal open hours are 6 am to 9 pm in spring and summer, and 6 am to 8 pm in fall and winter. Note that the walkways can close without notice, and for any reason -- weather, security, construction, etc.
Walkers can spend as much time as they wish gathering photos from this high level. On a clear day, when the light is right, you can get some good photos of either city's skyline or the river itself.
Benjamin Franklin Bridge- was completed in 1926 but it took several years for people to get used to first of all having this wonderful bridge there but also to use it instead of the ferries to cross the Delaware. At its completion, it actually had the name of the Delaware River Port Authority Bridge and was the largest suspension bridge in the world.
The total length of the bridge is 9,650 feet with a span length of 1,750 feet. In 1956 it was renamed in honour of Benjamin Franklin.
The main conduit between Philly and Camden, New Jersey. My sister's first house in Philly was virtually right at the base of the Philadelphia end so I would always have a good view of the bridge. It's not as beautiful as some of the country's more famous bridges, but there are some interesting details on it and the views of the Camden Riversharks stadium and the city itself are great.