Born in San Sebastián, Chillida trained as an architect before turning to sculpture, and the discipline never left him. His work is concerned with the occupation of space rather than the depiction of form: iron, steel, alabaster and concrete arranged so that the void becomes the subject.
Alongside the monumental pieces — the Comb of the Wind on the Basque coast, Berlin, Washington — he produced a sustained body of works on paper, collages and engravings. The Chillida Leku museum near his birthplace holds the fullest account of his work. He died in San Sebastián in 2002.