Bureau International des Expositions (BIE)

The BIE is the Intergovernmental Organization in charge of overseeing and regulating all international exhibitions that last more than three weeks and are of non commercial nature (`Expos`). Today, 4 main types of Expos are organized under its auspices: World Expos, International Specialized Expos, Horticultural Exhibitions and the Design Triennale of Milan.