I will be travelling to Beijing from Bangkok on 28th Feb (22:30)

and will be leaving 3rd March onto London (14:30) and therefore will qualify for the 72 transit without VISA.

In this time i hope to visit the great wall of China, however i noticed above it quotes 'Passengers transiting in Beijing, Chongqing, Harbin, Guilin, Kunming, Wuhan, Xiamen, or Tianjin cannot leave the administrative area of the transit city' - please could someone confirm whether the great wall falls within this area?