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Coral Concrete Watchtower with Thermal Regulation and Timber Structure

Authors:
Tobias Tytgat, Fatos Berisha, Jan De graeve
Coral Concrete Watchtower with Thermal Regulation and Timber Structure

Project in-detail

Constructed from coral concrete and cross-laminated timber, the watchtower integrates thermal regulation features to create a functional space for visitors to explore the surrounding landscape.
5 key facts about this project
01
Constructed with coral concrete to enhance durability and minimize maintenance.
02
Features an innovative cross-laminated timber structure for improved thermal performance.
03
Incorporates a charred wooden façade for natural weather resistance and aesthetic appeal.
04
Designed to optimize visitor interaction through a semi-tempered hallway.
05
Utilizes Dabiri wind turbines to support renewable energy needs.

The project is a multifunctional watchtower located in a distinctive geographical area that emphasizes minimal interference with the natural environment. It aims to engage visitors and offer practical functionality. The design is compact, reflecting the intimate atmosphere of the nearby caves. The overall concept combines simple construction techniques with both passive and modern technologies, allowing for an effective blend of usability and aesthetics.

Design Concept and Spatial Organization

Careful planning outlines the watchtower's spatial organization to promote interaction among visitors. Inside, a semi-tempered hallway and a tourist information center guide guests throughout the building. Heating is limited to key areas, including the office and café, ensuring comfort while providing protection from the elements. This layout invites individuals to connect with one another and the surrounding landscape.

Material Selection and Performance

Several materials have been chosen strategically for construction, aiming for strength and energy efficiency. Cross-Laminated Timber (CLT) panels serve as the main structural framework, lending necessary support. Wood fiber insulation enhances thermal performance, while the ventilated façade made of fired wooden slats improves air circulation and serves an aesthetic purpose.

Sustainable Energy Integration

The design emphasizes sustainability by integrating renewable energy sources. Solar panels on the roof capture sunlight, while Dabiri wind turbines along the access path contribute to the building’s energy demands. This combination helps to reduce the ecological impact and supports self-sufficiency, highlighting the commitment to environmentally friendly practices.

Building Longevity and Maintenance

Durability is a core focus of the watchtower, with coral-based concrete used for the foundation, providing a stable base for essential systems. The choice of a burned façade not only enhances visual appeal but also minimizes maintenance efforts over time, making the building suitable for its environment.

Large windows frame views of the landscape, inviting natural light into the space. This feature deepens visitors’ connection to their surroundings, fostering an appreciation for the natural beauty while providing a comfortable space for exploration and gathering.

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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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