In December 2024, the Wall Reef—a 3D printed coral reef-inspired façade installation—was unveiled at the Tweespan and Vierspan residential complex in Rhoon, the Netherlands. Developed by Urban Reef in collaboration with senior housing provider Woonzorg Nederland, this pilot project showcases a novel approach to climate-adaptive architecture. The Wall Reef integrates sustainability, biodiversity, and aesthetic value into the built environment, making it a highly relevant innovation for architects, landscape architects, and product designers working on urban regeneration and climate-responsive design.

An Innovative Response to Urban Heat and Water Challenges
Mounted against the exterior brick wall of the residential complex, the Wall Reef comprises ceramic modules that serve multiple ecological purposes. Urban Reef’s computational design approach resulted in a form that passively mitigates heat stress, captures rainwater, and fosters biodiversity.

Rainwater Management
The installation collects rainwater by disconnecting a downspout, diverting it into the ceramic structure. The internal system gradually disperses the water through a passive cascading mechanism. This prevents overflow into sewage systems during storms while supporting a controlled microclimate via slow evaporation.

Heat Stress Reduction
By facilitating evaporation, the stored rainwater cools the surrounding air, helping to reduce the urban heat island effect. This passive cooling mechanism is particularly beneficial in densely built environments where vegetation and open soil are limited.

A Façade That Doubles as an Urban Habitat
What sets the Wall Reef apart is its potential to reintroduce nature into urban settings. The porous ceramic modules provide ideal conditions for mosses, algae, insects, and even nesting birds. The structure’s geometry promotes microclimates, offering cooler, more humid zones and warmer, dryer areas. This architectural approach transforms underutilised vertical surfaces into functional ecological assets.

For architects and landscape designers, the project highlights the untapped potential of building façades as active participants in urban ecosystems. It suggests new directions for façades that go beyond energy efficiency or aesthetic appeal to directly support environmental resilience.

Sustainability Through Material Innovation
Constructed from 3D printed ceramics, the Wall Reef leverages digital fabrication techniques to create complex, biomimetic forms that would be difficult to achieve with conventional methods. While not explicitly biobased or recycled, the material choice emphasises durability, porosity, and natural aesthetics, aligning with the principles of circular and regenerative design.

Moreover, by designing for longevity and ecological performance, the project contributes to the broader goals of climate adaptation and biodiversity enhancement—core priorities in sustainable urban planning.

Looking Ahead
Over the next year, the installation will be closely monitored to assess its environmental performance and residents’ responses. The data gathered will inform future applications and potential scaling of the concept in other urban environments.

This pilot represents a compelling intersection of architecture, ecological design, and material innovation—with implications for any discipline seeking to address climate resilience through the built environment.

Find this material on our collection, here.

Source: Woonzorg Nederland & Urban Reef
Photos: Vincent Nabbe