The highest library in the world is located on the 60th floor, at an altitude of 230.0 meters, in JW Marriott hotel at Tomorrow Square in central Shanghai, according to the Guinness World Records. Currently, the library has more than two thousand printed books, which are mainly about Chinese classics, architecture, philosophy, history, art and literary works. The library is only open to part of the guests in the hotel. (Photo/People's Daily Online)