Calder accepts the commission from Carlos Raúl Villanueva, whom he met through Sert in 1951, to design an acoustic ceiling for Aula Magna, the auditorium of the Universidad Central de Venezuela. He collaborates with the engineering firm Bolt, Beranek, and Newman,
Calder arrives in Caracas. He sets up a studio at the metal shop of the Universidad Central de Venezuela and sees Acoustic Ceiling installed in Aula Magna for the first time. Louisa plans to join Calder in Caracas, but a tornado hits Connecticut and causes extensive flooding; she
cancels her trip.
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.