I was so impressed with Greater Philadelphia website with its social & new media, ….. its podcasts, audio tours, videos, internet radio station, entertainment blog, and so much more. But …you have to see Virtual Philadelphia. This amazing 3D technology was created by Geo-Sim Systems and uses state of the art technology with aerial photography, satellite and digitial photography. This program will allow you to walk, drive, or fly thru Philadelphia. Take a look at the video below.