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Cylindrical Structure with Geothermal Heating and a Walkable Roof Overlooking a Volcanic Landscape

Authors:
Victoria García, Matilde Alcina
Cylindrical Structure with Geothermal Heating and a Walkable Roof Overlooking a Volcanic Landscape

Project in-detail

A cylindrical structure with a walkable roof and geothermal heating rises beside the Hverfjall volcano, providing visitors a comfortable space to relax and engage with the dramatic natural landscape.
5 key facts about this project
01
A walkable roof provides a panoramic view of Hverfjall volcano.
02
The building’s cylindrical shape minimizes environmental impact.
03
Geothermal heating system optimizes energy efficiency.
04
A thermal water fountain enhances visitor comfort year-round.
05
The structure's semi-buried design promotes thermal stability.

The Orbis Coffee Shop is located beside the Hverfjall volcano in Iceland, serving as a space for visitors to relax and enjoy the views. The design focuses on blending with the natural landscape, utilizing a cylindrical shape that complements its surroundings while providing practical benefits. The walkable roof acts as a lookout point, encouraging users to take in the impressive volcanic scenery.

Architecture Concept

The building's cylindrical form not only enhances its visual appearance but also ensures durability. The walkable roof extends from the ground plane and creates an inviting space for exploration and interaction. Positioned at the highest point is the main entrance, which draws visitors into an interior organized around a clear circulation path. This path leads to several functional areas, such as the coffee shop and exhibition center, all while prioritizing views from the south-facing glazed facade.

Environmental Integration

The design places a strong emphasis on environmental integration and the efficient use of natural resources. The south-facing orientation captures sunlight to illuminate the interior, improving the overall experience for visitors. Incorporating a thermal water fountain adds to the comfort within the building, providing a semi-heated area that is especially pleasant during colder months. This thoughtful connection to the natural environment underscores the building's role as a resting point amidst the dramatic landscape.

Material Selection

Careful consideration has gone into the choice of materials used for the Orbis Coffee Shop. Elements like thermal insulation and hermetic triple glazing work together to improve energy efficiency while maintaining a focus on the structure’s performance. Geothermal energy systems further support this goal, allowing the building to blend with its surroundings while providing necessary services.

One notable detail is how the building is designed to be partially buried, which helps in conserving energy and creating visual interest. This design feature allows the structure to maintain a strong connection to the landscape, reinforcing its purpose as a destination for those seeking respite in the beautiful setting of Iceland.

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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
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