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Geothermal Observation Tower Featuring Reinforced Concrete and Expansive Glass Facades

Authors:
Shuting Zhang, Xinzhu You
Geothermal Observation Tower Featuring Reinforced Concrete and Expansive Glass Facades

Project in-detail

Constructed with reinforced concrete and expansive glass, the tower seamlessly integrates into the geothermal landscape, providing an immersive observation experience for visitors to explore the unique geological features of the area.
5 key facts about this project
01
Constructed to blend with the natural fissures of the Icelandic terrain.
02
Incorporates large glass facades for unobstructed views of geothermal features.
03
Utilizes reinforced concrete for structural integrity against harsh weather.
04
Features a spiral staircase designed to enhance visitor experience through ascent.
05
Includes educational displays integrated into the visitor pathways for engagement.
The Cascade Cave Observation Tower is an architectural project located in northern Iceland, designed to offer visitors exceptional views of the geothermal landscape surrounding Grjotgja. This facility serves both educational and recreational functions, providing an interactive experience that emphasizes the unique geological features of the area. The design is a thoughtful response to the natural environment, integrating architecture with its topography to enhance visitor engagement.

Sustainable Architecture and Material Choices

Key to the architectural design is the use of reinforced concrete, chosen for its structural strength and ability to form bold, cantilevered structures that reflect the nearby geological formations. Large glass panels are incorporated to maximize natural light and offer uninterrupted sightlines to the striking landscape. Wood is utilized in interior finishes to create a warm atmosphere, providing a tactile contrast to the robust concrete shell. Steel is integrated into the structural framework to allow for slender, elegant profiles that do not compromise the building's stability.

The construction employs advanced techniques that ensure minimal disturbance to the surrounding landscape, further reinforcing the project's commitment to sustainability. The architectural forms mimic the natural fissures in the terrain, creating a seamless visual dialogue between the built and natural environments. The tower stands as a modern interpretation of its geological context, enhancing awareness of the area's volcanic activity and the unique natural history found along the fissure lines.

Visitor Experience and Interaction

The layout of the observation tower is arranged across multiple levels, promoting an intuitive flow for visitors. The ground level functions as the main entry point, providing access to both indoor and outdoor observation areas. The design features a panoramic café on the second floor, allowing visitors to enjoy refreshments while taking in the 360-degree views. The third floor serves as an enhanced lookout point, further extending views toward landmark geological features, including Blue Lake and the surrounding caves.

Circulation within the tower is facilitated by a spiral staircase, designed not only for functionality but also to enhance the visitor experience as they ascend through the structure. The ramped pathways guide visitors smoothly between levels, allowing for uninterrupted views at every stage of the climb. This thoughtful circulation design ensures that exploration of the tower complements the overall natural experience, providing a platform for discovering Iceland's unique geology.

The Cascade Cave Observation Tower is a well-considered example of how architecture can celebrate and interact with its natural surroundings. Its materiality, functional design, and educational elements work in harmony, reflecting the geological landscape while providing a space for visitor engagement. For those interested in exploring the architectural plans, architectural sections, and unique architectural ideas behind the project, further details await in the project presentation.
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100,000 € Prize Fund / Kingpsan Edition #10
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100,000€ Prize / 2025

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

Competition organisers

The 10th edition of the MICROHOME architecture competition invites architects and designers from around the world to explore the possibilities of compact, sustainable living. Hosted by Buildner in collaboration with Kingspan and Hapi Homes, this special edition challenges participants to design an off-grid, modular microhome for a young professional couple, with a maximum floor area of 25 m². Designs should prioritize innovation, efficiency, and real-world feasibility. 

A total prize fund of 100,000 € will be awarded, including three main prizes, the Kingspan Award, and the Hapi Homes Award, which will grant 15,000 € and lead to the construction of the selected design. The final registration deadline is September 25, 2025, and winners will be announced on Decebmer 9, 2025. For full competition details and submission guidelines, visit microhome.info.

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
Early bird registration deadline 22 May 2025
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