The Committee of Art Advisors at UNESCO approves Calder’s maquette for a standing mobile. Titled Spirale, the mobile top is made by Calder at Segré’s Iron Works in Connecticut and the stabile bottom is made with the collaboration of Jean Prouvé in France.
Calder installs Spirale, a monumental standing mobile, at UNESCO in Paris and attends the dedication ceremony on the following day.
During a yearlong stay in Aix-en-Provence, Calder executed the first group of large-scale outdoor works and concurrently concentrated on painting gouaches. In 1954–55, he visited the Middle East, India, and South America, with trips to Paris in between, resulting in an astonishing output and range of work. Toward the late 1950s, Calder turned his attention to commissions both at home and abroad.