Gehry, a personal friend of the client, did not charge her for the plans. His design was guided by the goal of creating an environment that would stand out as different from the usual institutional image of the treatment centre. The character of Gehry's architecture is recognisable primarily in the design of the roof, with a dynamism more accentuated than in the rest of the complex, inspired by the image of a shawl in a Vermeer painting.
Stainless steel appears repeatedly in Gehry's projects, from the Bilbao Guggenheim to the Marqués de Riscal; here it makes the roof into a little sculpture made up of structural elements of Finnish pine with plywood parts.
There are no gutters, so rainwater drains from the roof into special pits dug in the ground. The little complex is built around a tower covered with rough white plaster like the local dwellings, or like a lighthouse.