This is a big stadium in China. 

There is a big stadium in China. 

The Beijing National Stadium is a famous place in China. 

The Beijing National Stadium is a famous landmark in China. 

The stadium works by using two separate structures that stand 50 feet apart. Inside, there is a red concrete bowl where people sit to watch events. Around this bowl is a huge outer frame made of steel beams. 
Architects from a Swiss firm called Herzog & de Meuron designed the stadium. They won the design contest in April 2003 after looking at 13 different ideas. 
Building the stadium was a huge job that took many years. Construction began in December 2003 and finished in June 2008. 
Today, the Bird's Nest is used for many different kinds of fun. People go there to watch football matches and big racing events. It has even hosted the League of Legends World Championship finals. 
The Beijing National Stadium is a massive architectural landmark in China. 

The stadium functions through two independent, separate structures. These two parts stand 50 feet apart from one another. The first part is a red concrete seating bowl. The second part is an outer steel frame that surrounds the bowl. To support the structure, twenty-four trussed columns encase the inner bowl. Each of these massive columns weighs 1,000 tons. Although the steel looks random, each half of the stadium is nearly symmetrical. 
Engineers used several complex systems to manage the environment inside the stadium. A 24-hour-per-day rainwater collector sits near the building. This system purifies water for use throughout the stadium grounds. Under the playing surface, a network of pipes manages the temperature. These pipes gather heat during the winter to warm the stadium. In the summer, they disperse heat to keep the area cool. The design also optimizes airflow and temperature across every surface for better ventilation.
The design process involved a global competition and careful study. In 2001, Beijing held a bidding process to find the best arena design. The Swiss architecture firm Herzog & de Meuron won the award in April 2003. Their design was chosen from 13 final submissions. The architects studied Chinese ceramics to inspire the "porous" look of the building. They also worked with Chinese architect Li Xinggang and artistic consultant Ai Weiwei. Originally, the design included a retractable roof, which inspired the nest look. This roof was later removed to simplify the project and reduce costs.
Construction of the stadium was a monumental task involving many people. Ground was broken on December 24, 2003. At the height of construction, 17,000 workers were on the site. The project used 121,000 tons of steel, all manufactured in China. The stadium officially opened on June 28, 2008. One remarkable feat occurred on May 14, 2008, when the grass field was laid. This 7,811-square-meter modular turf system was installed in only 24 hours. 
The stadium's capacity has changed throughout its history due to design shifts. The original plan intended to hold 100,000 people. However, 9,000 seats were removed during a simplification process. This brought the total to 91,000. After the 2008 Olympics, 11,000 temporary seats were also removed. This leaves the stadium with a current permanent capacity of 80,000 people. The total cost of the stadium was US$428 million. 
Since the Olympics, the Bird's Nest has hosted a wide variety of events. It has held football matches, such as the 2009 Supercoppa Italiana. It also hosted the 2017 League of Legends World Championship finals. 
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