紫禁城故宮 Forbidden City
You can find lots of information on Wikipedia about it in chinese or english.
Hence, instead of copy and paste here, go and check the webs out.
Chinese website.
http://zh.wikipedia.org/wiki/%E6%95%85%E5%AE%AB
English website
http://commons.wikimedia.org/wiki/Forbidden_City
2006-10-15 16:37:14 補充:
故宮 Imperial Palacevisit:
http://zh.wikipedia.org/wiki/故宮