Another idea for public seating area outside the cafe using materials from the heath. This design is by a company called molo who have created a variety of public seating areas that are currently on display Orgatec in Koln, Germany.
Gravity Home: Sunday Inspiration The Church of San Giovanni Battista in Mogno, Switzerland. Designed by architect Mario Botta who created a pattern with layers of Peccia marble and Vallemaggia granite. (via Design Milk)