The design concept for Enigma, an avant-garde culinary venture in Barcelona, was to “create a world of its own, without references, to help you open yourself to a cuisine that also doesn’t want to work with known references,” says Carme Pigem, a partner of RCR Arquitectes. “We wanted to let your feelings and emotions be carried away by complete sensuality, as if in a cloud.” The architects, who are this year’s recipients of the Pritzker Prize, cite the cloud-making installations of Dutch artist Berndnaut Smilde as a point of inspiration.