Yoko Ono: Have You Seen the Horizon Lately?November 27, 1999-March 26, 200
Location: Nathan Cummings Building for Modern and Contemporary Art
Artist: Yoko Ono
This retrospective exhibition spanned 40 years of Ono's work, and included the Wish Tree. Ono scribbled the word "Imagine," the title of the "peace song" written by her late husband, John Lennon, on a white bookmark and tied it to the tree, inviting visitors to the exhibition to write their own wishes and attach them to the tree.