Broken Obelisk is a sculpture designed by Barnett Newman between 1963 and 1967. Fabricated from three tons of Cor-Ten steel, which acquires a rust-colored patina, it is the largest and best known of his six sculptures. Four multiples of the sculpture exist. Recent articles regarding this sculpture contradict one another with regard to the individual histories of its first three multiples. The following entry attempts to resolve these contradictions, but further research of primary sources (1967–1971) is required to track the history of each one more accurately.