Triennale, the four-time curved tile designed by Gio Ponti and Alberto Rosselli for Marazzi in 1960, is on display at the MAXXI Museo Nazionale delle Arti del XXI secolo in Rome as part of the major retrospective that, forty years after his death, brings together archival materials, original models, photographs, books, magazines and design classics on the figure of architect Ponti. In the section of the exhibition "Architecture is a crystal", the curators of the exhibition have chosen to interpret Triennale as an art form, generating other forms, respecting Ponti's concept of finished form. The two compositions, both made with Triennale in black stoneware, one in 30x46.5 and one in 10x15.5 cm format -, frame original sketches designed by Gio Ponti. Triennale is today an iconic form that transcends surface and context and can be applied to any Marazzi collection, with any palette or texture, and continues to fascinate architects, designers and artists. Adrian Samson, the London photographer who recently portrayed Triennale, commented on his work: "I fell in love with the colours and designs of these iconic tiles. They looked like art objects to me. We didn't want to use any additional material, just work with their shape, their body, enhancing their sensuality".