The Planetary Garden is located at the highest part of the city, with views to the Alps. It is a path and a room. The room is an artefact that works like a sensorial observatory. Its outdoor image is that of the landscape: is built with straw bales treated with hydro seeding and its appearance change along time. Inside, the path crosses the room surrounded by a patchwork of flowers able to react to night and day and different time cycles. The ceiling of the room is open, configured by an arbor of jasmines and white artificial flowers. During the day the white flowers arbor creates shadows and lights and a flower-full sky. During the night the room is lighted with “black light” and “moon light” what creates non natural sensorial experiences: the plants on the floor, change their habitual colour and the ones on the arbor bright in luminous intense white, creating an overlapping with the real stars in the sky. The room is north oriented where the pole star is located. This non-habitual experience catches attention and enhances perceptive awareness.