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Translucent Concrete and Natural Textures in a Serene Underground Retreat

Authors:
Man-ling Wu, Yi-liang Ko, Shao-ling Huang, Chia-jung Wu
Translucent Concrete and Natural Textures in a Serene Underground Retreat
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Utilizing translucent concrete and sun-printed paper, the design creates a dynamic underground environment that fosters communal interaction and personal reflection within a historically rich context.
5 key facts about this project
01
Utilizes translucent concrete to enhance natural light penetration in subterranean spaces.
02
Incorporates mixed fiber materials for improved structural integrity and unique surface aesthetics.
03
Features sun-printed paper concrete, adding a distinctive visual element that reflects nature.
04
Layered spatial organization facilitates diverse communal and introspective experiences.
05
Design pays homage to historical Roman public bathing traditions within a contemporary context.

### Overview

Located in Rome, the "Sub Rosa" project merges historical significance with contemporary architectural practices to develop a multifunctional underground space. Drawing its name from the symbolic rose, associated with beauty and secrecy, the design explores the relationship between concealed areas and communal interaction beneath the city’s historical layers.

### Spatial Strategy

The layout employs a hierarchical organization that transitions from public to private spaces. Entry into the structure leads visitors through a series of environments designed for varied interactions, including a public bath area central to the communal experience, changing rooms that provide a moment of tranquility, and quiet reading areas that encourage reflection. Each space is strategically designed to facilitate a range of social exchanges, from communal activities to individual contemplation, fostering an engaging environment that resonates with both historical practices and modern needs.

### Materiality

Material selection is fundamental to the identity of "Sub Rosa," with an emphasis on innovative concrete types that enhance light penetration and texture. Translucent concrete allows natural light to filter into the underground environment, creating a dynamic atmosphere throughout the day. Mixed fiber and sun-printed paper concrete are utilized to increase structural integrity and introduce unique visual elements, while patterned concrete reflects the intricate designs found in rose petals. Together, these materials contribute to an environment evocative of organic forms, highlighting the project's commitment to both aesthetic and experiential qualities within its context.

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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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