“Earlier in the year [1968], John Lennon—under the new influence of his relationship with Yoko Ono—had staged a London art exhibition at the Robert Frazer Gallery of his “white art”. Called You Are Here, the show consisted of items like a huge circular white canvas with “you are here” appearing microscopically, and a machine that continuously inflated white balloons to be released over London with “you are here” labels attached.”

—Mike Evans, from The Art of the Beatles, 1984.