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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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MICROHOME 2026
MICROHOME 2026
100,000 € Prize Fund / Kingpsan Edition #11
The Next House: USA
The Next House: USA
20,000 USD Prize
Buildner's Unbuilt Award 2026
Buildner's Unbuilt Award 2026
100,000€ Prize / 2026

The Next House: USA — A Global Call to Reimagine the American Suburb

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Competition organisers

Buildner is launching The Next House: USA, a global architecture competition that challenges architects, designers, and thinkers to reimagine the American suburban home for the 21st century. For decades, the suburban house has symbolized comfort and stability, but today it often reflects excess, isolation, and environmental strain. This competition asks: how can the American home evolve to address climate urgency, economic pressures, and shifting social values?

Participants are tasked with designing a prototype home of no more than 1,500 sq ft (≈140 m²) for a household of two adults and one child. The design should be compact yet generous, adaptable, sustainable, affordable, and replicable across diverse U.S. contexts. More than a design exercise, the competition aims to spark a conversation about how homes can support healthier, smarter, and more connected communities.

The total prize fund is $20,000 USD. The final registration deadline is May 20, 2026, and winners will be announced on September 22, 2026. The Next House: USA invites architects, students, and visionaries worldwide to redefine what the American home means today—and what it should mean tomorrow.

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Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
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