The 1888 Barcelona Universal Exposition was Spain's first International World's Fair and ran from 8 April to 9 December 1888. The second one in Barcelona was held in 1929).

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.