To Be Looked at (from the Other Side of the Glass) with One Eye, Close to, for Almost an Hour, (1918) by Marcel Duchamp

I basically liked the name of this painting and according to Marcel Duchamp looking through the convex lens "for almost an hour" is supposed to have a hallucinatory effects on the viewer. As the view they is smallen, flipped and otherwise distorted. Duchamp was also delighted at the fact that the glass broke while it was being transported, welcoming the mechanics of chance into the work.