Expo 2000 was a World's Fair held in Hanover, Germany from Thursday, June 1 to Tuesday, October 31, 2000. It was located on the Hanover fairground (Messegelände Hannover), which is the largest exhibition ground in the world. The fair was not a financial success.The fair's masterplan was designed in a joint venture with Studio d'Arnaboldi / Cavadini, Locarno and AS&P (Albert Speer und Partner GmbH).