Longwood, located right outside of Philadelphia is a cornucopia of sights for the nature lover out there. The Gardens are acres upon acres of all types of plants, flowers, trees, and anything else involving plant life. There is not much to do here besides walking around and taking in the sights. This may not be for everyone, since it is a lot of walking and there is no action taking place. Think of it as a zoo for plants. There are also waterfalls and fountains and a pretty decent and green restaurant.