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Spiral Structure of Concrete and Steel Overlooking Ecological Wetlands

Authors:
Carita Ahonen, Erik Lehtosaari
Spiral Structure of Concrete and Steel Overlooking Ecological Wetlands
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With a spiral structure composed of concrete and steel, this observation tower offers distinctive vistas of the Al Wathba Wetland, enhancing the experience of nature while prioritizing accessibility for all visitors.
5 key facts about this project
01
The tower's design is inspired by traditional Arabic woven baskets.
02
It features an optical illusion that alters its appearance with the viewer's perspective.
03
Four concrete piles form a minimal foundation, reducing ecological impact.
04
Hexagonal solar panels provide nighttime illumination and energy efficiency.
05
Accessibility is prioritized with low-tech support equipment for all visitors.

The miraGé Flamingo Observation Tower is located in the Al Wathba Wetland Reserve in Abu Dhabi. Designed to function as a space for observing nature, the tower reflects the form of Arabic woven baskets. Its design promotes a strong connection with the natural surroundings and encourages visitors to explore the area's diverse wildlife and ecosystems from different viewpoints.

Structural Design

The foundation of the tower is made up of four concrete piles that are embedded into the earth. This creates a stable base while reducing the impact on the delicate wetland environment. The choice of a four-point support system allows the building to remain lightweight, helping it blend into the landscape rather than dominate it.

A steel structure supports the interior, chosen for its strength and ability to span larger spaces without additional support. This construction allows for open platforms and spiral pathways that guide visitors upward. Each level offers a different perspective, inviting exploration and discovery.

Material Considerations

To ensure durability and ease of maintenance, ecological wood planks are selected for the platforms. This choice aligns with sustainable practices as it provides a natural look while being resilient against the elements. The material choice reflects a commitment to functionality, ensuring that the tower withstands the wear of daily use in a wetland environment.

The outer shape of the tower features an optical illusion that changes based on where a viewer stands. This playful element keeps the experience engaging as visitors move around the structure. Visitors are invited to witness how the sunlight interacts with the form, creating varied appearances throughout the day.

The design includes hexagonal solar panels positioned at the top, which serve to illuminate the tower during the night while offering an interesting visual feature. Accessibility has also been thoughtfully considered, with provisions made for disabled visitors to navigate the space comfortably.

The layered design of the tower allows it to stand out within the landscape while encouraging exploration. As visitors ascend, they are not just observing the wetlands but are also part of the narrative of this unique environment.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

Buildner's Unbuilt Award 2025

Celebrating your unbuilt architecture visions with a €100,000 prize

100,000€ Prize / 2025 ideas COMPETITION
Prize 100,000 €
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Final registration deadline 30 October 2025

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