Describe my country's "Bird's Nest" and Water Cube

1. The Bird's Nest is the National Stadium: The National Stadium is located in the south of the central area of ??Beijing Olympic Park and is the main stadium for the 2008 Beijing Olympic Games. The project covers a total area of ??21 hectares and has approximately 91,000 audience seats. The opening and closing ceremonies of the Olympic and Paralympic Games, track and field competitions and football finals were held. After the Olympic Games, it became a large-scale professional place for Beijing citizens to participate in sports activities and enjoy sports entertainment, and became a landmark sports building and Olympic heritage.

2. The Water Cube is the National Aquatics Center: Located in the Beijing Olympic Park, it is the main swimming pool built in Beijing for the 2008 Summer Olympics and one of the landmark buildings of the 2008 Beijing Olympics. Its design plan is the "Water Cube" ([H2O]3) plan produced through a global design competition. It and the National Stadium (commonly known as the Bird's Nest) are located on both sides of the northern end of the central axis of Beijing, forming a relatively complete image of Beijing as a historical and cultural city. The planned construction land of the National Aquatics Center is 62,950 square meters, with a total construction area of ??65,000-80,000 square meters, of which the underground construction area is not less than 15,000 square meters, with a length, width and height of 177m × 177m × 30m respectively. ?

The Water Cube started construction at the end of 2003 and was completed and put into trial operation before the end of 2007. It is the national swimming center of the Beijing Olympic Games. Its membrane structure is the best in the world. It is designed based on the arrangement of cells and the natural structure of soap bubbles. This form has never appeared in architectural structures, and the creativity is very unique.