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Basalt Stone Facade and Recycled Concrete Structure in a Volcanic Landscape

Authors:
Milana Tokić, Lenka Tasić
Basalt Stone Facade and Recycled Concrete Structure in a Volcanic Landscape

Project in-detail

Set against the backdrop of Hverfjal volcano, the building's basalt stone facade and recycled concrete construction create a dialogue with the landscape while providing essential services as a visitor center and cafe.
5 key facts about this project
01
The building utilizes hexagonal modules that enhance structural stability and spatial flow.
02
Recycled concrete is employed for all major structural elements, promoting sustainability.
03
A glass roof allows for the observation of northern lights from the interior.
04
The layout preserves an existing trail, guiding visitors to nearby geological features.
05
Large windows frame the surrounding landscape and maximize natural daylight.

The STOD cafe and visitor center is located in the foothills of Hverfjal volcano in Myvatn, northeastern Iceland. The building serves as a gathering place for visitors exploring the unique volcanic landscape. Its design draws inspiration from the natural formations found in the area, creating a strong connection between the building and its environment. The structure reflects the rugged characteristics of the surroundings while providing essential services for those who come to experience the beauty of the region.

Design Concept

The layout consists of hexagonal modules arranged in a way that emphasizes both structure and function. The use of triangular shapes transforms into hexagonal forms, allowing for effective load distribution across the building. This design not only increases interior space but also enhances the flow from one area to another, encouraging movement throughout the facility.

Interior Space and Visitor Experience

The center comprises three levels and covers a footprint of 660 m², providing ample space for various activities. The main entrance is centrally located on the ground floor, designed to shield visitors from harsh winds typical of the area. This feature improves arrival experiences and promotes fluidity in the movement of guests within the building. The interior layout encourages exploration by offering various programmatic options, allowing visitors to choose their paths.

Materiality and Environmental Integration

Recycled concrete forms the core of the building's structural elements, allowing it to utilize thermal mass principles that manage indoor climate effectively. Polished concrete flooring is used throughout, providing durability in high-use areas while harmonizing with the rugged exterior. Additionally, locally sourced birchwood enhances other interior features, such as ceilings and furniture, adding warmth to the overall atmosphere. The facade also incorporates basalt stone, further anchoring the design within the volcanic landscape.

Natural Lighting and Views

Generous windows throughout the facade bring in natural light, brightening the interior and framing views of the surrounding landscape. A glass roof adds zenithal lighting, allowing visitors to enjoy the northern lights, a natural phenomenon that adds to the experience of the region. Hexagonal paving stones lead from the building to the existing trail, linking the visitor center to the geological features that attract visitors and reinforcing the connection between architecture and nature.

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

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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

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