World Heritage Sites in China (Postcards) At present, 31 of China's historical sites and scenic areas are designated UNESCO world heritage. World Heritage Sites in China postcards are in 31 sets of 10. They picture the most representative images of each site with concise captions indicating the location, age, features and historical significance. These postcards make ideal postal greetings, souvenirs, or gifts. They are published in Chinese, English and Spanish.
