Vegetation covers the India Pavilion and trees are planted on the roof of the Saudi Arabia Pavilion. As one of the main principles of the Expo 2010 Shanghai, the "Green Expo" concept is reflected throughout Expo Park's planning, construction and operations. Photo taken on April 25, 2010. [Xinhua]

Visitors pass by the Theme Pavilion whose facades are covered by vegetation April 25, 2010. [Xinhua]