Botany, n. — The liber
Beneath the bark of every tree lives a layer no one ever sees: the liber. Neither wood nor bark — it is the living membrane between the two. This conducting tissue carries elaborated sap from the leaves all the way down to the roots, nourishing every cell along the way.
Without it, the tree exhausts itself. It stops growing. It dies. The liber is not the hardest part, nor the most visible — but it is what makes life circulate.
Why this name?
Because we believe architecture must also be this membrane between two worlds — between the built and the landscape, between structure and life, between form and time. An architecture that doesn't partition, that circulates light, air, vegetation. That nourishes those who inhabit it.
Liber — like the liber of the tree. Like liberating space to welcome the living.
The Practice
GUILLAUME CILETTILicensed Architect (HMONP) — Landscape Designer
A graduate of the École Nationale Supérieure d'Architecture de Lyon and holder of the HMONP — the qualification that authorises an architect to lead construction projects independently, under full professional responsibility — Guillaume Ciletti built his practice at the crossroads of two disciplines too often kept apart: architecture and landscape.
A biologist by training, after studying landscape architecture in Geneva, he founded POESAGES in 2016 and spent ten years designing gardens and public spaces. This path — from the living world toward the built — forged a practice rooted in the ground, conceived from vegetation to rooftop, with no break between landscape and architecture.
Our DNA
Creativity
Inventive solutions, grounded in reality
Biodiversity
The living world as a project material
Frugality
Build less, build better
LIBER.ARCHI draws on 10 years of landscape expertise developed within POESAGES.
Discover POESAGES ↗