These are the places to which we went (in no particular order): The Great Wall (Mu Tian Yu Section), Tiananmen Square, the Forbidden City, the Summer Palace, the Ming Tombs, the Temple of Heaven, the 2008 Olympic Green Park (including the Bird's Nest and the Water Cube) and, in contrast to the modernity of the Olympic Park, a typical "hutong" (communal neighborhood) where we were provided lunch by a local family! We also went to a wonderful acrobatic show and a kung fu performance.
What a wonderful trip!
Here's a few photos....