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Earth-Sheltered Structure with Recycled Lumber and Green Walls Designed for Community Engagement

Earth-Sheltered Structure with Recycled Lumber and Green Walls Designed for Community Engagement
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Constructed with recycled lumber and integrated green walls, the earth-sheltered observation tower enhances the natural landscape while serving as a focal point for community interaction and ecological awareness.
5 key facts about this project
01
Utilizes recycled plastic lumber to minimize environmental impact.
02
Features a facade wrapped in vibrant sunflowers to reflect local flora.
03
Incorporates compressed earth blocks for enhanced thermal efficiency.
04
Designed with green walls to promote biodiversity and habitat creation.
05
Engages the community through interactive trails and participatory maintenance.

## Overview
The Superbloom observation tower is located near Silver Lake in South Dakota, aiming to honor local architectural heritage while promoting environmental awareness. Its design draws inspiration from the historical sod dugout houses that once provided shelter to pioneers in the region. The project emphasizes the importance of integrating contemporary architectural practices with the cultural and historical significance of the area, facilitating access for both local residents and tourists.

## Design Strategy
### Structural Integration and Materiality
The tower features an earth-sheltered design that subtly blends into the natural surroundings, reflecting the historical context of the dugouts. The use of recycled plastic lumber as the primary structural material supports sustainability while connecting the structure to its landscape. The visually striking façade, characterized by vibrant yellow sunflowers and a red exterior reminiscent of traditional barns, enhances the ecological aesthetic and further roots the design in local identity. Key materials include engineered lumber for modular construction, compressed earth blocks for sheltering, and marine-grade recycled plastic piles for structural support.

### Ecological Engagement
The project is designed with a focus on enhancing ecological awareness and community interaction. A network of pathways and footbridges facilitates exploration of the terrain, while gathering spaces foster community engagement. Features such as the "dugout trail," bird habitats, and irrigated green walls promote biodiversity and offer educational experiences centered on local ecology. Future phases will expand the project with additional habitat towers and interactive trails, further enriching visitor experience and wildlife habitats.

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Kingspan MICROHOME 2026: Building Less to Create More

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Competition organisers

The Kingspan MICROHOME 2026 competition invites architects and designers worldwide to rethink small-scale living by creating an off-grid, modular micro dwelling under 25 m². Now in its 11th edition, the contest emphasizes sustainable, innovative, and human-centered design that demonstrates how compact living can have a big impact.

With a €100,000 prize fund, entries will be evaluated for originality, efficiency, and their response to contemporary environmental and social challenges. The competition is open to everyone, with submissions allowed individually or in teams of up to four. Registration closes on 30 September 2026, and winners will be announced on 15 December 2026.

By celebrating creativity within strict limits, MICROHOME 2026 continues to push the boundaries of compact architecture and sustainable living.

MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 2026

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