In 2007, for the Nuit Blanche festival, Robert Stadler created this installation in the Church of Saint Paul Saint Louis, Paris. From only one perspective does it create this stunning, provocative and stylishly simple question mark. From others, it kinda looks like this.
Stadler is a trained designer, having studied at the Instituto Europeo di Design, in Milan. His work uses a space to explore how to distort the usual boundaries of art and design. It questions the status of an object - art or product? As well as the boundaries between the serious and the absurd, and the elegant and the vulgar. I love love love his use of perspective too!
Click through on the image for a link to his website.