Avant-garde artist Marcel Duchamp changed the art world forever in 1917, when he included a urinal in an art exhibition adorned only with his signature.
With that controversial act, he unleashed the potential for mundane, ordinary objects to be art -- in the right context.
Since Duchamp's time, creators all over the world have thought about ways to elevate the humble urinal into gorgeous, surreal, occasionally terrifying and sometimes astonishing works of art. Are these projects awesome or are they just taking the piss?
Take a look at the photos below and decide for yourself.
A version of this post appeared on HuffPost Brazil.