Get inspired!

17,725 architecture projects

Learn from past Buildner architecture competition participants through our extensive project library, curated over more than 15 years!

Cave Tower Crafted with Volcanic Ash and Glulam Beams in Geothermal Landscape

Author:
James Erickson
Cave Tower Crafted with Volcanic Ash and Glulam Beams in Geothermal Landscape

Project in-detail

Constructed with glulam beams and volcanic ash, the cave tower rises in a geothermal landscape, creating a unique interaction between its interior warmth and the surrounding rugged terrain, serving as a communal space for visitors to engage with nature.
5 key facts about this project
01
Constructed with volcanic ash to enhance sustainability.
02
Features a cave tower structure that challenges traditional design.
03
Utilizes glulam beams sourced from local Icelandic forests.
04
Integrates geothermal spring water for heating and bathing.
05
Designed to interact directly with the surrounding rugged landscape.

The setting in Grjótagjá features geothermal springs and rugged landscapes, creating a unique backdrop for the design. The project explores the relationship between nature and human-made structures. It engages with themes of chaos and order, inviting people to experience how these elements coexist. Natural forces and materials play a significant role in shaping the overall concept, which emphasizes the connection to both the environment and the identity of the place.

Conceptual Framework

At the heart of the design is the idea of intense natural forces paused in time. This theme reflects the tension between destruction and nurturing tendencies in nature. The geothermal springs represent warmth and vitality, offering a focal point within the rugged surroundings. Daylight is purposefully integrated into interior spaces. This enhances the experience and showcases the textures and colors of the natural landscape, allowing a richer connection between people and their environment.

Structural Expression

The design includes a unique cave tower structure, positioned at an unconventional angle. This orientation challenges typical architectural norms. It creates a dialogue between the landscape and the inside spaces. Occupants can engage directly with changing weather conditions, heightening their interaction with the site. By intentionally obstructing views in certain areas, the design captures hidden elements. This encourages a curiosity and connection to both the architecture and its surroundings.

Sustainability Measures

Sustainability is a primary concern in the project. Structural strategies help minimize the ecological impact on the land. Concrete piers support the building, allowing it to rest lightly on the terrain. This approach limits any permanent alterations to the natural landscape. In this way, the design respects and honors the existing environment while accommodating modern needs.

Material Applications

The choice of materials reflects a commitment to local resources and environmental responsibility. Volcanic ash serves as a supplementary cement component, which decreases the need for standard cement use. Glulam beams from local forests provide the main structural support. Reclaimed steel is utilized for connections between elements, contributing to overall sustainability. Inside, basalt tiles, along with cellulose and sheep wool insulation, help achieve thermal efficiency and functionality.

The atmosphere created within the building benefits from ample sunlight, which streams into the spaces. This light enhances the connection between the interior and the rugged landscape outside, establishing a strong relationship with nature.

Noticed a mistake?
Highlight the text and click on
Noticed a mistake

MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

`
Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

Buildner's Unbuilt Award 2025
Buildner's Unbuilt Award 2025
100,000€ Prize / 2025
Denver Affordable Housing Challenge
Denver Affordable Housing Challenge
Affordable Housing Series 19th Edition
The Architect's 
Chair
The Architect's Chair
Take a seat and make a statement! Edition #4
MICROHOME
MICROHOME
100,000 € Prize Fund / Kingpsan Edition #10
Kinderspace
Kinderspace
Architecture for Children’s Development #3
To view this project in detail,
please log in with your
Architects’ Network Plus account.
Subscription instantly unlocks all the architecture projects plus other member-only benefits:
  • Access the 17,725 Concept Library
  • Professional tools including file transfer, email, portfolio management, and more
Register now
Already a member? Log in

This website uses cookies to improve user experience and gather usage statistics.

More information is available in our Privacy & Cookie policy