Walking around the three venues, you'll see world record-sized snow sculptures longer than two football fields, and some ice buildings, palaces, monuments, or statues about 50 meters tall (160 feet high) that you can walk and slide around in and on. These displays are technologically sophisticated, using computer controlled LED and regular lighting to put on stunning displays of changing color and design. For example, there was a replica of the Great Wall of China that people could slide on. Many of the architecture replicas have ice slides. Harbin is called “Ice City,” and the winters are bitterly cold, but the conditions are right for the ice festival.