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Submerged Habitat Crafted from Reinforced Concrete and Transparent Glass for Marine Observation

Submerged Habitat Crafted from Reinforced Concrete and Transparent Glass for Marine Observation
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Constructed with reinforced concrete and large glass panels, this submerged observatory enables visitors to engage directly with marine ecosystems while promoting education about aquatic biodiversity.
5 key facts about this project
01
Constructed partially submerged to enhance underwater viewing experiences.
02
Utilizes large glass panels to maximize natural light and visibility of aquatic life.
03
Incorporates sustainable materials, including reinforced concrete and native landscaping.
04
Features a circular design that mimics natural marine forms for integration with the environment.
05
Educates visitors on local biodiversity and environmental conservation through interactive exhibits.

### Project Overview
"Now You Sea Me" is located on Hattusaari, an island in the Baltic Sea near Helsinki, Finland. Covering an area of 1,800 square meters, the structure functions as both an aquarium and an observatory, encouraging visitors to reflect on the relationship between humanity and marine ecosystems. This design addresses environmental challenges such as eutrophication and biodiversity loss, positioning architecture as a medium for enhancing awareness and understanding of ecological issues.

### Spatial Strategy and User Experience
The design includes a partially submerged observatory that creates an immersive experience for visitors. The circular form of the building resembles marine organisms and promotes a sense of connectivity. Access is facilitated through a series of ramps that guide individuals from the shoreline to underwater viewing areas, symbolizing a journey of introspection and discovery. Large transparent panels enable clear views into the aquatic environment, effectively bridging the interior and exterior landscapes.

### Materiality and Sustainability
Structural integrity is primarily achieved through reinforced concrete, selected for its durability in marine settings. Extensive use of glass for viewing areas enhances transparency and allows natural light to illuminate underwater spaces, improving the visitor experience. Sustainable timber is incorporated for non-structural elements, underscoring a commitment to ecological principles. Additionally, a specialized marine coating protects the submerged components from degradation caused by marine organisms. The overall material strategy emphasizes longevity while aligning with environmental stewardship.

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MICROHOME 2026
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100,000 € Prize Fund / Kingpsan Edition #11
The Next House: USA
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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

`
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.

The Next House: USA

Design the next suburban home for the USA

20,000 USD Prize ideas COMPETITION
Prize Monetary award
Eligibility Open to all
Advance registration deadline 18 February 2026

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Buildner's Unbuilt Award 2026

Celebrating your unbuilt architecture visions with a €100,000 prize

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Early bird registration deadline 26 February 2026

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