The only real reason to climb to the top of Jingshan Park is for the amazing views over the Forbidden City. Of course, what you really see is how revolting the air is here. While it just shows up in the close up photos of the palace as a grey sky, from a distance, the soupy air is quite shocking. You can't really see much, but the entire fogged in area behing the walls is the Forbidden City and its endless courtyards. The clearer photo was obviously taken at closer range, and shows the moat that provided the dirt for Jingshan Park. Also, to clear up any confusion, the photos in the previous post were from the internet, and are either heavily photoshopped or taken one a very rare clear day in Beijing; these photos are what you can expect while you're here.