The extraordinarily dynamic square in front of the municipal library is truly a garden of the senses. Every week it changes according to the growth of buds, flowers or flowerbeds ... An archipelago of cool and quiet little corners between the vegetation invites you to read and relax. Large-format concrete "books" with seminal thinkers' aphorisms identify the doors and the main spaces. 5 techniques are used to minimize water consumption: a subterranean tank collects water from buildings, plant species that consume little water, poor soil that filter water, soil correction through use of Hydro-absorbent gel (30% less consumption) and mulch to reduce soil transpiration.