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Iceberg-Inspired Tower with Ventilated Glass Overlooking Grjótagjá Caves

Authors:
Giovanni Giulioni, Daniele Garofalo
Iceberg-Inspired Tower with Ventilated Glass Overlooking Grjótagjá Caves
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Rising like an iceberg, the tower utilizes a ventilated glass facade to create a striking observation point over the Grjótagjá caves, offering visitors a unique interaction with Iceland's dramatic landscape.
5 key facts about this project
01
Rising form resembles an iceberg, reflecting Iceland's natural landscape.
02
Panoramic views of Grjótagjá caves enhance visitor experience.
03
Ventilated glass facade improves energy efficiency while maximizing light.
04
Designed to harmonize with topography, integrating seamlessly with the site.
05
Features a unique metal mesh flooring for transparency and structural support.

The Iceland Cave Tower enhances the connection between the built environment and the unique geological features of Iceland, specifically overlooking the Grjótagjá caves. The structure serves multiple purposes, providing spaces for a bar, storage, a hall, and restrooms. The design concept draws on the imagery of an iceberg, highlighting both visible and hidden dimensions of the landscape, with the tower’s tall form rising above while symbolically protecting the depths below.

Design Concept

This design integrates closely with the landscape. The shape of the tower and the arrangement of its spaces are influenced by the surrounding topography. The iceberg metaphor not only captures the essence of Iceland’s environment but also encourages a dialogue between the structure and the natural site, strengthening the link between nature and human activity.

Functional Layout

The ground floor features several areas: a bar covering 30 square meters, a 14 square meter storage space, a 28 square meter hall, and a restroom of 15 square meters. The layout is carefully planned to maximize visitor engagement and enhance interaction with the landscape. By providing clear views of the caves, the design enriches the visitor experience and fosters appreciation for the site’s natural beauty.

Materiality and Aesthetics

The project uses a ventilated glass facade and metal mesh flooring, which allow natural light to fill the space while ensuring adequate structural support. The glass facade emphasizes the views of the landscape, while also improving energy efficiency. The metal mesh flooring complements the overall design and helps to anchor the tower within its environment.

Structural Integration

The first floor features a west facade that aligns with the contours of the landscape, ensuring a cohesive connection between the tower and its surroundings. This design choice allows the tower to have a subdued presence while still serving as an observation point for visitors. By carefully integrating architectural elements with the natural features of the site, the design deepens guests' understanding of the geological context.

The Iceland Cave Tower balances practical function and thoughtful design. Through its arrangement of spaces and choice of materials, it enhances the experience of the surrounding natural environment while emphasizing a clear architectural narrative.

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

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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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