Green Ark, Meise: A Sustainable Greenhouse Architecture Landmark in Belgium

Located at the heart of the 92-hectare Meise Botanic Garden in Meise, Belgium, Green Ark is a groundbreaking sustainable greenhouse project designed by NU architectuuratelier in collaboration with archipelago. Completed in 2024, the 10,280 m² project redefines contemporary botanical architecture through ecological innovation, advanced climate control systems, and renewable material strategies.

The Green Ark project includes the renovation of 7,600 m² of existing greenhouse infrastructure alongside the addition of a spectacular hyperboloid wooden pavilion. Together, these interventions transform the botanical complex into one of Europe’s most forward-thinking climate-adaptive greenhouse environments.

Hyperboloid Pavilion: Timber Innovation Meets Botanical Design

At the architectural core of the project stands a sculptural hyperboloid pavilion constructed using Kebony Clear wood. The pavilion’s dynamic geometry creates a visual landmark within the botanical garden while reinforcing the project’s commitment to sustainable construction.

Dually modified™ Kebony wood shingles clad the roof structure, delivering:

• Enhanced durability and dimensional stability
• Increased hardness and structural longevity
• A natural aesthetic that blends seamlessly with the surrounding landscape

The FSC-certified fast-growing softwoods used in the project mature within 25 to 30 years, significantly faster than traditional hardwoods, which require 80 to 200 years. During growth, these trees actively capture atmospheric carbon, contributing to long-term CO₂ sequestration and reducing the building’s environmental footprint.

The Dual Modification™ process permanently alters the wood’s cell walls by forming locked-in furan polymers, improving safety, durability, and lifespan, key elements in sustainable architectural design.

22 Climate-Controlled Greenhouses Housing 10,000+ Plant Species

Green Ark is more than an architectural statement, it is a biodiversity sanctuary. The complex houses more than 10,000 endangered plant species distributed across 22 independently regulated greenhouses.

Each greenhouse maintains optimized environmental conditions, including:

• Individual temperature control
• Precise humidity regulation
• Species-specific climate environments

This advanced environmental regulation system ensures the preservation of rare and endangered flora from diverse global ecosystems, reinforcing the project’s ecological mission.

Sustainable Technology & Energy Efficiency

One of the most pioneering features of Green Ark is its integrated rainwater recycling irrigation system. Rainwater collected from the building’s surface is reused to irrigate plant collections, dramatically reducing resource consumption.

As a result of innovative engineering and energy-efficient systems:

• Overall energy consumption has been reduced by 50% compared to previous greenhouse facilities
• Water use has been optimized through closed-loop irrigation
• Operational sustainability has significantly improved

This approach positions Green Ark as a benchmark in sustainable greenhouse architecture and circular building design.

A Learning Hub for Climate Awareness and Biodiversity Protection

Green Ark also functions as an educational and environmental awareness center. Welcoming approximately 240,000 annual visitors, the facility serves as a living laboratory that communicates the urgent threats posed by climate change and biodiversity loss.

Through immersive spatial design and curated botanical exhibitions, the project promotes:

• Climate literacy
• Ecological innovation
• Environmental responsibility
• Sustainable future strategies

By integrating architecture, science, and public engagement, Green Ark strengthens the Meise Botanic Garden’s mission as a global research and conservation institution.

Collaborative Architecture and Government Partnership

The project was realized through a collaborative alliance between the Flemish Government, Meise Botanic Garden, and multiple industry partners, including De Keyser Wood Industry, Mouton, and Van Poppel. This multidisciplinary cooperation ensured technical precision, material innovation, and ecological performance at every stage of development.

All photographs are works of  N/A