The Water Tower was another emblematic building of Expo 2008 and its vertical icon. Designed by Enrique de Teresa, it is 76 metres high with 10,400 accessible square metres. On the top floor, there is a 720-square-metre panoramic bar with fantastic views over Zaragoza. Inside the tower there is a 23-metre-high sculpture called Splash, which represents a splash of water, "the arrival of life on our planet". The Splash sculpture, based on dynamic simulation systems, was designed by Pere Gifre from IKONIC ARTS. From: www.wikipedia.org

There are certain differences between the International Expositions, such as the one to be held in Zaragoza, and the Universal Expositions, which are also regulated by the B.I.E. Universal Expositions are held every 5 years on a site with no area limitations. They last 6 months and address a general theme. An example of this type of exposition is the Seville "Expo 92". International Expositions, such as the one planned for Zaragoza in 2008, are held over 3 months on a site of no more than 25 hectares. They address a specific theme, which in this case, is "Water and Sustainable Development". From: www.expozaragoza2008.es