Expo '98 was an official specialised World's Fair held in Lisbon, Portugal from Friday, 22 May to Wednesday, 30 September 1998. The theme of the fair was "The Oceans, a Heritage for the Future", chosen in part to commemorate 500 years of Portuguese discoveries. The Expo received over 10 million visitors in 132 days, while 143 countries and many organizations were represented.

Expo 2008 was an international exposition held from Saturday 14 June to Sunday 14 September 2008 in Zaragoza, Spain, with the theme of "Water and Sustainable Development". The exposition was placed in a meander of the river Ebro. It was coordinated by the Bureau International des Expositions, the organization responsible for sanctioning World's Fairs.