 In the 20th century, the works of Alexander Calder, Ruth Asawa, and other modern practitioners developed the medium of wire sculpture as an art form.Alexander Calder (1898–1976), an American sculptor, greatly developed the use of wire as a medium for sculpture with his kinetic and movement based "Cirque Calder", as well as pieces such as "Two Acrobats", "Romulus and Remus", and "Hercules and Lion".In 1926, after a stint spent making toys at the request of a Serbian toy merchant in Paris, Calder began creating his "Cirque Calder", a miniature, movable circus that uses movable wire models of various circus performers, like sword eaters and lion tamers.