Beijing Olympic Park, also     1     (know) as the Olympic Green, is located in Chaoyang District, Beijing, with a total land area of 11.59 square kilometers. The famous National Stadium or “Bird’s Nest” is the centerpiece of the park,     2     the opening and closing ceremonies of the 2022 Beijing Winter Olympics were hosted. The National Aquatics Center or “Water Cube” hosted the swimming, diving and synchronized swimming events. It was transformed     3     the “Ice Cube” for the 2022 Beijing Winter Olympic and Paralympic Games, and detachable curling tracks were built on the swimming pool to host curling events.