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Spiral Structure of Timber and Steel Enhances Community Engagement in Prairie Landscape

Spiral Structure of Timber and Steel Enhances Community Engagement in Prairie Landscape
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A spiraling observation tower constructed with timber and steel invites visitors to engage with the surrounding prairie landscape while providing educational and recreational opportunities for the community.
5 key facts about this project
01
Constructed with locally sourced timber for reduced environmental impact.
02
Features hexagonal platforms that provide diverse viewpoints of the landscape.
03
Incorporates ADA-compliant access for inclusive community use.
04
Utilizes steel outriggers for enhanced structural stability while minimizing visual bulk.
05
Integrates educational spaces that promote ecological awareness and local history.

## Project Overview
The Prairie Helix is an architectural design submitted for the Legendary Highway 14 Tower Design Competition in De Smet, South Dakota. The project aims to create an observation tower that enhances visitors' connections to the surrounding landscape and promotes community engagement. The design reflects regional characteristics while providing a platform for community interaction and individual experience.

## Spatial Strategy
The conceptual framework of the Prairie Helix is centered on observation, orientation, and community interaction. The tower's helix form encourages a gradual ascent, creating layered views of the local landscape, including the city, Silver Lake, and surrounding homesteads. Each level of the structure is tailored to facilitate engagement with the environment, incorporating viewing areas, play spaces, and rest zones. This design not only fosters individual exploration but also serves as a gathering point for educational activities focused on local ecology and history.

## Materiality and Construction
The architectural composition features overlapping hexagonal platforms that ascend, reflecting both stability and the organic shapes of the prairie landscape. Selected materials include:

- **Wood (12x12 columns)**: Offers an organic quality that links to local craftsmanship and the environment.
- **Steel outriggers**: Provide structural integrity against environmental forces.
- **Wood plank decking**: Ensures comfort and safety for users while maintaining aesthetic coherence.
- **Steel wire mesh railings**: Allow for unobstructed views while ensuring visitor safety.

The tower is designed for universal accessibility, with the first level compliant with ADA standards, promoting inclusivity. An external boardwalk harmonizes with the landscape, enhancing user interaction with the surroundings. Dynamic, rotating platforms offer varied vistas as visitors ascend, encouraging curiosity and exploration throughout the tower.

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

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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.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
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Early bird registration deadline 19 November 2025

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