From the moment of its creation, the Guggenheim Museum Bilbao has worked to assemble a collection of significant works of art from the mid-twentieth century to the present day. Some of the pieces that now comprise this collection stand out as icons of the contemporary era; when they were first unveiled, they made a strong impression that left no one indifferent, and over the years they have grown in stature, becoming veritable landmarks in the history of contemporary art.