The green and energy-efficient Theme Pavilion will cover 80,000 square meters above ground, and another 40,000 square meters underground. Exhibitions will cover 70,000 square meters. The major exhibition hall covers 30,000 square meters, without supporting pillars. The Theme Pavilion will be Shanghai's second-largest exhibition hall, after the New International Expo Center in Pudong, which has 100,000 square meters of exhibition areas.
The performance center, which will hold most of the 20,000 Expo performances during the six-month Expo, was the last of the five permanent Expo buildings to start construction when work began in December 2007. The other four are the China Pavilion, Theme Pavilion, Expo Center and Expo Boulevard. The 126,000-square meter center will be the largest comprehensive performance arena in China. It will have two floors underground and four above ground. The seating configuration of the main auditorium, which has a center stage, can be changed to accommodate 4,000, 8,000, 12,000 or 18,000 seats depending on the requirements of the performance and the audience size.
The Saudi Arabia Pavilion grows up as an elegant palace shining in the grand burning desert. The floating curved roof brings the thousands of audience to walk through the desert, date palms and rivers, to arrive at the curved main entrance at the south of the building. The natural condition and historical development of Saudi Arabia is represented by the stretched landscape inside and outside, and the curved slope and the hourglass in the central area as well.
The China Pavilion is designed with the concept of "Oriental Crown." The traditional Chinese wooden structure element, Dougong brackets, is introduced. Its main colour is "Gugong (Forbidden City) Red" which represents the taste and spirit of Chinese culture. The China Pavilion consists of the 47,000-square-meter Chinese national pavilion, 38,000-square-meter Regional joint pavilion and 3,300-square-meter pavilion of Hong Kong, Macao and Taiwan.
USA is expected to make their presence felt when they introduce their pavilion which covers an area of 6,000 square meters. The latest images of the USA Pavilion concept embraces a post-industrial Earth-in-the-balance effect equipped with the latest technology. Some of the showcased technology includes; green building materials and process, sustainable procurement and agricultures, clean energy, state-of-the-art health services, and cutting-edge telecommunications.
Japan Pavilion has secured a 6,000-square-meter plot at the Expo site. The 24-meter-high pavilion is the largest the country has ever built for a World Expo. It is also one of the largest pavilions at Expo 2010. The pavilion will be divided into past, present and future exhibits. The country's semi-circular pavilion will make efficient use of natural resources with solar energy collection batteries and a double-layer membrane that can filter sunshine to coincide with its interpretation of how technology can better our lives.