Visitors watch movies at the Pavilion of Future in Zone E. of the Expo Park in Shanghai, April 22, 2010. The exhibition in the Future Pavilion starts with an interaction with visitors, inviting them to imagine what cities will be like in the future. Through movies, books and sculptures, it tells how a city was envisaged, planned and realized in history, proposes the various possibilities of a future city, and points to the spiritual elements that have always driven human progress. [Xinhua]