After a four day workshop designing and fabricating parts of the Solar house participants (project directors, researchers, Fab Labbers and students) of the seminar were off to Collserola Park – Cerdanyoa de Valles- where the House of Can Vallaura is located. Here is a place where experimentations like green architecture, nature, sustainability, energy and social activitis such as Green Fab Lab will be occuring. It is also the place where the winner of the tree house project during MAA Phase I will be built. After the Barbecue event, Vicente Guallart from the Valldaura association, showed invitees the Collserola House and its surrounding forest.