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Lava Stone Shelter with Water Collection System and Observation Platform

Authors:
Katarina Lončarević, Natalija Bogdanović, Bojana Pašajlić
Lava Stone Shelter with Water Collection System and Observation Platform
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Built with locally sourced lava stone and designed to capture atmospheric precipitation, the structure serves as both a sustainable shelter and an open observation platform, seamlessly integrating public and private spaces within its expansive layout.
5 key facts about this project
01
Constructed using locally sourced lava stone for environmental integration.
02
Incorporates a railing system that captures and repurposes atmospheric precipitation.
03
Designed as an open observation platform with a fully passable roof.
04
Expands into two additional caves, enhancing functional space without impeding flow.
05
Features a water treatment system powered by nearby windmills for sustainability.

The design explores the connection between inner and outer spaces, situated in a location defined by two tectonic plates. The structure serves multiple roles, functioning as both a bridge and a shelter. It integrates public and private areas under a single roof, addressing the varied needs of its users while encouraging interaction with the surrounding landscape.

Design Concept

The internal layout divides the building into private and public sections, offering a careful balance between openness and privacy. This distinction enhances social interaction while allowing individual spaces to feel secure. The concept expands into two additional caves, which connect effortlessly with the main structure. This arrangement maintains an organic flow and enhances the functional capabilities of the design.

Materiality

Materials play an important role in shaping the building's character. The use of local crushed lava stone, cement milk, and transparent epoxy resin is highlighted. The multi-layered facade not only provides visual variety but also ensures necessary insulation. Sourcing materials from the local environment enhances the connection between the structure and its geographical setting, grounding it in its place.

Sustainability Features

Sustainability is a key focus in the design. A railing system collects atmospheric precipitation, allowing water to be reused within the building. Accompanying this system is water treatment that is supported by energy harnessed from nearby windmills. This integration reflects a commitment to reducing environmental impact and increases the self-sufficiency of the structure.

Spatial Dynamics

The building operates as an open observation platform, featuring a roof that invites engagement with the outside. Thoughtful circulation allows for easy movement throughout the space, ensuring that users can navigate freely. Large windows frame views of the surrounding landscape, connecting the interior experience with the natural environment.

The play of light across the multi-layered facade throughout the day transitions the interior atmosphere, emphasizing the design's adaptability to changing conditions.

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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.

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