In 1956, the Dutch artist Constant Nieuwenhuys visited a gypsy camp in Alba, Italy. That same day he drew up plans for a “permanent camp” made of mobile elements sheltered beneath a roof. With this he began to think of designs for a nomadic urb. This project, which came to known as New Babylon, would take the form of models, drawings, engravings, watercolors, paintings, collages, documents, conferences, and projections...