As Madonna so famously stated, “we are living in a material world.” And yes, that is true, particularly in the art world. Artists use a variety of media to create their works, which in turn influence the meaning and interpretation of the piece. In one of the rooms in the Material Worlds display at Tate Modern the question “How do materials affect meaning?” is pasted in yellow across the wall. Opposite this question is Duchamp’s Fountain displayed on a pedestal under glass. How does the material used in Duchamp’s Fountain affect its meaning? This question serves as an aide to visitors to think more critically in regards to the effect materials can have in the understanding of a work of art.