Parc des Loges Childhood and Sports Center/

HEMAA Architectes

France

Location(City/Country):

Evry-Courcouronnes (Greater Paris), / France

Tipology:

Educational

Year (Design/Construction):

- / 2025

Area (Net/Gross):

2444 m2 / 3854 m2

Operational Carbon emissions (B6) kgCO2e/m2/y:

Embodied Carbon emissions (A1-A3) kgCO2e/m2:

Load-bearing rammed earth façades made from excavated material reused from the Grand Paris metro works, drastically reducing embodied carbon and transport impacts.
A fully timber structure combined with hemp-insulated rammed earth creates a breathable, low-impact envelope with excellent thermal inertia and indoor comfort.
Optimised orientation, deep roof overhangs, adjustable sun protection and natural ventilation minimise energy demand while ensuring year-round comfort. The building follows the natural topography and extends into a planted park environment, enhancing biodiversity, outdoor learning and urban heat island mitigation.

Founded in 2018 by Charles Hesters and Pierre Martin-Saint-Etienne, HEMAA is an architecture firm that embraces a contextual, sobriety-based approach rooted in the living world. Each project emerges from a careful reading of its surroundings, seeking a balance between nature, use, and
material. In Evry-Courcouronnes (Greater Paris – France), the Parc des Loges Childhood and Sports Center fully embodies this philosophy: a gentle, landscape-based composition built from bio- and geo-sourced materials, serving a public facility that is open, generous, and sustainable.

An Architecture with Deep Roots

Perfectly integrated into the site’s natural topography, the project follows the slope without artificial alteration. Five entities—nursery, elementary school, childminders’ hub, cafeteria, and sports stand—are arranged around a central garden courtyard, sheltered from the street yet open to the landscape. Connected by delicate glazed walkways, these autonomous volumes encourage natural light, visual connections, and a relationship with the living environment. An allegory of the constituent materials of the lodge park, the facades are made of load-bearing rammed earth, and the interior framework is entirely wooden.
Pathways meander between newly planted trees, extending the school naturally into the park. The children’s garden becomes a tamed forest, planted with oaks, ashes, maples, and elms, and punctuated by a clearing inviting free play. Inspired by the Waldkindergarten philosophy, the project offers a playful and immersive vision of learning—one that is deeply anchored in nature and the living world.

Sobriety-oriented materials

The entire project follows a demanding environmental approach. The 665 m³ of load-bearing earth used for the façades—equivalent to 1,330 m² of 50 cm-thick walls—was sourced from the Grand Paris metro tunnel excavations. Insulated with hemp wool, these walls retain the natural breathability of rammed earth. The green roofs (15–20 cm of substrate) enhance thermal comfort and support natural water management. Adjustable sunshades and deep roof overhangs regulate sunlight naturally. The building orientation captures winter light and promotes natural summer ventilation. Abundant, diverse vegetation limits urban heat island effects and strengthens local biodiversity.
Wood and rammed earth create a soft, rooted architecture with simple geometric shapes. In this working-class community, where many children do not leave the city during school breaks, the childhood center is meant to be both a place of learning and a space for escape. Rammed earth—a living, breathable material—invites touch and provides a unique setting for children growing up in a city largely built from concrete. Wood, warm and tactile, defines the interiors and the structure. At the base, low-carbon textured concrete, punctuated with glazed panels at child height (60 cm), combines sturdiness, natural light, and intimacy.

A Shared Facility

The sports complex naturally extends this architectural language. Its 300-seat grandstand, perfectly orientated, ensures optimal viewing comfort. Its gently sloping roof lowers toward the leisure area, preserving light and views within the courtyards. Integrated into the whole, it reinforces the idea of a shared, intergenerational, and open public space at the heart of the city.

Parking Spaces: 50 underground