Urban Oasis: A Sustainable Architecture Proposal Rooted in Earth, Culture, and Climate

Urban Oasis presents a compelling vision of sustainable architecture, where traditional knowledge, environmental responsiveness, and contemporary design converge into a cohesive residential ecosystem. Designed by Keerthigan Thavaseelan, Tyler Bakhtiari, and Ben Millsom, this Editor’s Choice entry from Earth Made 2020 redefines how architecture can reconnect people with nature while addressing urban density and cultural identity.

Set within the environmental and cultural context of Accra, the project proposes a spatial experience that is both secluded and socially engaging. It is not merely a residential complex but a living landscape that invites users to pause, gather, and reconnect with their surroundings.

A Route Through Landscape and Community

At the core of the proposal is a carefully designed circulation strategy that transforms movement into experience. A central route cuts through the site, functioning as both a shortcut and a social spine. This pathway is accessible to all and encourages moments of pause, interaction, and leisure.

The design integrates residential units with shared public spaces, allowing inhabitants and visitors to engage with the environment through multiple layers of interaction. Spaces for sitting, playing, and relaxation are embedded throughout the development, reinforcing the idea of architecture as a facilitator of everyday life.

This approach reflects a broader ambition within sustainable architecture: to move beyond isolated buildings and instead create interconnected systems that foster community and ecological awareness.

Cultural Integration Through Adinkra Symbolism

A defining aspect of the project is its deep engagement with Ghanaian cultural heritage. The design draws inspiration from Adinkra symbols, particularly the ‘Akoma Ntoaso,’ which signifies unity and the joining of hearts. This symbolic foundation informs both the spatial organization and the architectural language of the project.

The circular clustering of units reflects this idea of connection, bringing together diverse groups of people within a shared environment. By embedding cultural narratives into the physical form, the project challenges the homogenization often seen in contemporary urban developments.

This integration of symbolism is not decorative but structural. It influences how spaces relate to one another, how circulation flows, and how community is formed within the built environment.

Biomimicry and the Baobab Tree

The project’s formal language is derived from the Baobab tree, a powerful ecological and cultural symbol across Africa. Known as the ‘Tree of Life,’ the Baobab informs both the structural logic and spatial hierarchy of the design.

The architecture mimics the tree’s form through a series of clustered cylindrical volumes that expand at the top, creating shaded communal areas. These elevated spaces act as social hubs, much like the canopy of a tree provides shelter and gathering space.

This biomimetic approach enhances environmental performance while reinforcing the project’s conceptual narrative. It allows the architecture to feel organic and grounded in its context, rather than imposed upon it.

Climate-Responsive Planning Strategies

A rigorous environmental analysis underpins the planning strategy. Sun path studies and radiation analysis inform the orientation and massing of the buildings, ensuring optimal shading and thermal comfort.

The design minimizes heat gain by strategically placing openings and using the building form itself as a shading device. The clustered arrangement also creates microclimates within the site, reducing exposure to harsh solar radiation while promoting natural ventilation.

These strategies are essential to sustainable architecture in tropical climates, where passive design solutions significantly reduce energy consumption.

Hydroponics and Integrated Green Systems

The proposal introduces hydroponic systems as a key component of its environmental strategy. These systems are integrated into the architectural framework, allowing vegetation to grow vertically within the structure.

This not only enhances the aesthetic quality of the spaces but also contributes to food production and improved air quality. The presence of greenery reinforces the concept of wandering through a natural landscape, even within a dense urban setting.

Green curtains further complement this strategy, acting as passive cooling elements while defining spatial boundaries. They soften the architectural edges and create a dynamic interaction between built form and vegetation.

Adobe Construction and Material Intelligence

Material selection plays a critical role in the project’s sustainability agenda. The use of adobe and rammed earth highlights the potential of traditional construction techniques when combined with modern technologies.

The design explores various wall assemblies, including triangular framed wattle and daub systems, demonstrating how earthen materials can achieve both structural performance and aesthetic richness. These materials are locally sourced, reducing environmental impact while supporting regional construction practices.

The integration of parametric design tools allows for precise control over geometry and structural behavior, bridging the gap between tradition and innovation.

Structural System and Parametric Development

The structural framework is based on a glulam system designed to support adobe construction. Ring beams at each level distribute lateral forces, ensuring stability as the building height increases.

Parametric modeling plays a crucial role in developing the diagrid structures that define the upper portions of the buildings. These systems provide both structural efficiency and visual identity, reinforcing the project’s contemporary character.

The use of computational design tools enables the optimization of form, material usage, and performance, making the project a strong example of digitally informed sustainable architecture.

Spatial Experience and Ground-Level Integration

The ground floor plan reveals a carefully orchestrated landscape of water bodies, pathways, and clustered units. Water elements are integrated throughout the site, enhancing microclimatic conditions and creating a sense of tranquility.

The radial organization of spaces allows for clear zoning while maintaining visual and physical connectivity. Public, semi-private, and private spaces are seamlessly interwoven, supporting a diverse range of activities.

This layered spatial strategy ensures that the development remains both functional and experiential, catering to the needs of its users while maintaining a strong connection to nature.

Juror’s Perspective

Juror Xiao Lei noted, “Impressive scheme for the earth made competition theme, brave idea for the new residential project and also related to the context of the history.”

This observation highlights the project’s ability to balance innovation with contextual sensitivity, a key requirement in contemporary sustainable architecture.

Urban Oasis exemplifies how sustainable architecture can operate at multiple scales, from material selection to urban planning. By integrating cultural symbolism, environmental strategies, and advanced computational tools, the project creates a holistic design that is both meaningful and performative.

It stands as a model for future developments in rapidly urbanizing regions, demonstrating that sustainability is not just a technical requirement but a cultural and spatial opportunity.

Through its thoughtful synthesis of tradition and innovation, Urban Oasis transforms architecture into an immersive, living system that responds to both people and place.