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Spiral Timber Structure with Thatch Roof Overlooking Wetlands

Author:
Weston Williamson + Partners
Spiral Timber Structure with Thatch Roof Overlooking Wetlands
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A spiral timber observation tower with a thatch roof offers expansive views of the wetlands, creating a functional space for birdwatching while integrating sustainable construction methods and local materials.
5 key facts about this project
01
A cone-shaped structure enhances stability while providing panoramic views.
02
Local timber slats create a natural aesthetic while ensuring durability.
03
The thatch roof integrates traditional building techniques with modern design.
04
Screw piles minimize environmental impact and ensure foundation stability.
05
Multiple observation platforms allow for dynamic engagement with the surroundings.

### Project Overview

The Pape Bird Observation Tower is situated in the Pape region, serving as a birdwatching platform that integrates with a footbridge. This structure allows visitors to observe birds in their natural habitat while commemorating the previous observation tower that once existed on the site. The design reflects a balance between functionality and the ecological context, providing an opportunity for engagement with the surrounding wetlands.

### Spatial Strategy

The design employs a cone-shaped structure with a spiraling staircase that facilitates both circulation and observation. As visitors ascend, they encounter a series of viewing platforms that offer panoramic views, enabling a continuous interaction with the environment. This tiered layout not only enhances accessibility but also fosters an immersive experience in the natural landscape. The architectural form evokes a fluid journey upward, encouraging users to appreciate the ecosystem from multiple vantage points.

### Materiality and Sustainability

Sustainability is a core consideration in the selection of materials used for the tower. The roofing features a 300mm thatch layer, which reflects local building traditions while providing insulation and weather resistance. The primary structure is composed of locally sourced timber, inclusive of 150mm thick timber slats for flooring, emphasizing eco-friendliness and supporting local economies. The foundation employs screw piles for stability in wet conditions, minimizing environmental disruption. Additionally, timber batten walls create a balance of transparency and protection, allowing for observation of wildlife while facilitating airflow. These material choices collectively illustrate a commitment to environmentally responsible design.

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The Next House: USA — A Global Call to Reimagine the American Suburb

`
Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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