An indoor pool drawn up with the same rigour as a building: that is how Sara and Jean-Luc conceived and designed this reflecting pool in halftones and grey tadelakt. An exercise in style, where the pool, carved flush against the wall, plays with reflections, materials, sculpted borders, ancient stones and filtered light.

The balance of interior design is based on purity and simple lines. Lime, tadelakt, the smooth curves or the iron line of a handrail, Simply-carved steps turn staircases into sculpture.

Each space is a backdrop, where the eye can gently wander. Here, more than ever, perspective and the rhythm of the walls take on their full significance. Every transition, every arrangement of interior doors must be studied and studied again, so that their proportions may direct the light.

What a compliment, when the artist Patrick des Gachons rests his contemporary gaze on the gable of an old Provençal farmhouse on the Côte d'Azur: hand in hand, art and architecture meet in the same square of blue sky.

As artists Jean-Luc Charrier and Sara Giunta like to draw pictures of light onto buildings. At a stroke, the walls become picture rails on which to hang line effects, cut-outs and drawn steel structures, like a series of singular openings and frames for the landscape.

Making good use of the architectural features, of a vault or an old storehouse to give character to a laundry room or a kitchen. The only rule: a connection between the existing building and the creative effort. It's the delicate art of matching a conservatory to a tiled floor or a glass panel; or a stone wall with the brick chimney of a barbecue.