This is one of my favourites, taken at a checkpoint whilst at a section of the Great Wall called Simatai.
Specifically what "Please keep the facilities well don't open the door. Follow the staff's arrangement please" means is anybody's guess.
But, according to the BBC, Beijing is working hard to cut down on the Chinglish for the Summer Games next year.
More amusing examples at http://news.bbc.co.uk/1/hi/in_pictures/6054726.stm :)