Chillida's sculptures and graphics concentrated on the human form (mostly torsos and busts); his later works tended to be more massive and more abstract, and included many monumental public works.[4] Chillida himself tended to reject the label of "abstract", preferring instead to call himself a "realist sculptor"
Chillida's sculptures and graphic art pieces have been collected by major museums, including the Museum of Modern Art and the Metropolitan Museum of Art in New York; the Tate Britain in London; the Kunsthalle Basel in Switzerland; and the Neue Nationalgalerie in Berlin. In 1986 the Chillida collection of the Museo Nacional Centro de Arte Reina Sofía in Madrid was inaugurated; Chillida designed the museum's logo