Expo 2010, officially the Expo 2010 Shanghai China, was held on both banks of the Huangpu River in Shanghai, China, from 1 May to 31 October 2010. It was a major World Expo registered by the Bureau International des Expositions (BIE), in the tradition of international fairs and expositions, the first since 2005. The theme of the exposition was "Better City – Better Life" and signifies Shanghai's new status in the 21st century as the "next great world city". The Expo emblem features the Chinese character 世 modified to represent three people together with the 2010 date. It had the largest number of countries participating and was the most expensive Expo in the history of the world's fairs. The Shanghai World Expo was also the largest World's Fair site ever at 5.28 square km.

A world's fair, also known as a universal exhibition or an expo, is a large global exhibition designed to showcase the achievements of nations. These exhibitions vary in character and are held in different parts of the world at a specific site for a period of time, typically between three and six months.