World-famous architect Renzo Piano and his son Carlo set sail from Genoa one late Summer day, guided by the ancestral desire felt by many explorers before them: to find Atlantis (in Italian, Atlantide). Atlantis is the perfect city, built to harbour a perfect society. This is its true beauty, precious and elusive. Renzo Piano, a man who can not only measure land at a glance but also the sea's infinite geometry, returns to the places where he has erected his works, mosaic pieces in the infinite, necessary quest for perfection. With his son he sails across the Pacific, along the banks of the Thames and the Seine, reaching as far as Athens, San Francisco's Golden Gate Park and Osaka Bay. In search of beauty, he finds the imperfections that every building project carries within it. And so, all that remains is to sail on.