This article contains the details of the pavilions in Expo 2010. The 2010 World Expo Shanghai is the largest Expo site ever, covering more than 5.2 square kilometers and containing more than 70 exposition pavilions. More than 190 countries and 50 international organizations registered to participate in the 2010 Shanghai Expo. After the six-month run, the Expo had attracted well over 70 million visitors.