The itinerary is given a chiaroscuro effect by large slabs of bright Pietra Serena sandstone, while constellations of vases seem to float in mid-air, supported by suspended planes that are almost invisible within large transparent display cases.

Upon leaving this evocative museum space, visitors emerge into the 19th-century architecture of the palace, the renovation of which includes the creation of a “newfound home” designed specifically for preserving the rest of the foundation’s ancient art collection. The upper floors of the building contain spaces connected with the museum operations, including a library, a conference room, temporary exhibition rooms, and a restaurant at the top floor. A large entry hall welcomes visitors at the ground floor, where there is also a bookstore that links the bistro with the courtyard garden. The project was founded on the idea of creating a museum that would be open to the city, where visitors could stop by for a chat and a look around, like guests in a simple but refined urban living room.

The below-ground space is accessed from the main entrance, where a staircase carved in pietra forte fiorentina, a material extracted from quarries in Tuscany and Emilia, leads to the exhibition space, consisting of three circular rooms and a large elliptical room. This space, which is in semi-darkness, is enveloped by 30,000 stone segments, each one individually designed and skilfully built and assembled so that they continuously envelop the entire space: a formal continuity that gives it a sense of unity and fluidity.

The choice of a single type of stone, pietra forte fiorentina, gives expression to a material that is extracted from deep quarries in Firenzuola. It gives the impression of a space that has been hollowed out: subtracted just as quarries are hollowed out to become works of architecture of unconscious beauty. Because of the size of each segment, which is 5 centimetres thick, one metre long, and is distanced 5 millimetres from its neighbours, the horizontal stripes of the stones give this imposing mass an effect of suspension that contrasts with the reflective specks from Mica flakes in the stone. They create a multitude of small points of light in the shadows and the solid mass.