World's Fairs This link opens in a new windowPrimary source material from hundreds of fairs, including London's Great Exhibition of 1851, American fairs of the 19th and 20th centuries and 21st century EXPOs. A vital resource for students, teachers and researchers of a huge range of subjects including imperialism, race relations, gender studies, science and technology, consumer culture, architecture and design. South Korea staged Expo '93 in Taejon and Expo 2012 in Yeosu.