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Rammed Earth Structure with Curved Stairs Overlooking Cave Landscape

Author:
Laura Mihalache
Rammed Earth Structure with Curved Stairs Overlooking Cave Landscape
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Rammed earth construction defines a unique observation tower with curved stairs that frames views of the surrounding cave landscape, inviting visitors to engage with their natural environment while serving as a visitor center.
5 key facts about this project
01
Rammed earth walls enhance thermal performance and sustainability.
02
Curved staircases mimic natural cave formations throughout the interior.
03
Void spaces provide framed views of both the tower structure and landscape.
04
The tower's roof collects rainwater for efficient drainage and landscaping needs.
05
A modular walking path system adapts to varied terrain and site conditions.

The setting near Grjótagjá's caves offers a special exploration of how natural features can blend with buildings. The design is known as a "cave tower," representing the experience of being inside a cave along with the viewpoint provided by a tower. This combination invites visitors to engage with both the environment and the structure.

Conceptual Framework

The observation tower is crafted to fit into the surrounding rocky landscape effectively. It serves as more than just a place for viewing; it makes a statement about the relationship between built forms and nature. Rather than tapering upwards like many traditional towers, the interior space expands as one climbs, allowing more light in and creating a feeling of openness.

Entrance and Visitor Engagement

Entering the tower, visitors walk through an opening designed like a crevice in stone. This leads to a visitor center featuring an information stand. This element connects visitors with different experiences: the caves, the observation area, and a waiting space. Such a design clarifies the path and makes it easier for guests to navigate their experience.

Interior Atmosphere and Experience

Inside, the design creates a cave-like feel through carefully shaped elements. Curved stairs guide visitors along a pathway, presenting different heights and spaces that interact visually. A café located on an upper level offers views of the surrounding area, allowing a moment of reflection on the landscape beyond the tower.

Spatial Dynamics and Materiality

The structure includes voids that enhance the experience by framing views of the landscape as visitors move about. The use of rammed earth in construction adds a practical and attractive quality, aligning with goals for sustainability. Additionally, aluminum components are employed for their lightweight and cost-effective properties, contributing to the tower's visual design while addressing local weather conditions.

A modular walking path system, designed in a 1x1 meter configuration, is flexible for various terrains. This adaptability allows for easy movement across both flat ground and slopes, making connections to the caves or the fissure created by the shifting continental plates.

To support environmental sustainability, the roof design incorporates a system for collecting rainwater, enhancing drainage efficiency and integrating nature into the overall architectural plan of the tower.

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Kingspan MICROHOME 2026: Building Less to Create More

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Competition organisers

The Kingspan MICROHOME 2026 competition invites architects and designers worldwide to rethink small-scale living by creating an off-grid, modular micro dwelling under 25 m². Now in its 11th edition, the contest emphasizes sustainable, innovative, and human-centered design that demonstrates how compact living can have a big impact.

With a €100,000 prize fund, entries will be evaluated for originality, efficiency, and their response to contemporary environmental and social challenges. The competition is open to everyone, with submissions allowed individually or in teams of up to four. Registration closes on 30 September 2026, and winners will be announced on 15 December 2026.

By celebrating creativity within strict limits, MICROHOME 2026 continues to push the boundaries of compact architecture and sustainable living.

MICROHOME 2026

Design a new concept of small-scale home and share a prize fund of 100,000€

100,000 € Prize Fund / Kingpsan Edition #11 ideas COMPETITION
Prize 100,000 €
Eligibility Open to all
Final registration deadline 30 September 2026

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