Art. 54 Construction and Planning Law (CPL)

1. The green zone is intended to structure the built environment, to separate residential areas from industrial zones, to maintain green spaces within the centers of towns, and to protect the views and characteristic features of localities and monuments.

2. In the green zone, only underground constructions and installations or buildings and facilities necessary for the operation of said zone can be authorized, provided they do not undermine its purpose; under its building regulations, a municipality may permit, under these same conditions, the erection of small-sized buildings as defined in Article 27.