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High-Performance Concrete Arcs with Energy Recovery Systems in Urban Redevelopment

High-Performance Concrete Arcs with Energy Recovery Systems in Urban Redevelopment
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With cantilevered arcs crafted from ultra-high performance concrete and integrated energy recovery systems, the redevelopment revitalizes urban dynamics while enhancing community engagement.
5 key facts about this project
01
Cantilevered arcs create sheltered gathering spaces while enhancing structural aesthetics.
02
Energy recovery systems improve energy efficiency and reduce the carbon footprint.
03
Ultra-high performance concrete ensures durability while allowing for innovative design.
04
Integrated green spaces incorporate biodiversity into the urban environment.
05
Community involvement in the design process fosters a sense of ownership and connection.

## Overview and Concept

Located in Kharkiv, Ukraine, Freedom Square is the focus of an architectural redevelopment project that aims to modernize the public space while preserving its historical significance. This initiative seeks to honor the square's artistic legacy from the 1920s and 1930s by fostering community engagement and improving functionality. The design approach bridges the historic character of Freedom Square with a commitment to sustainability and innovation, reflecting a vision for both continuity and progress.

### Structural Layout and Spatial Interaction

The design integrates a central atrium with several cantilever arcs—Eternal Arc, Infinite Arc, and Reverence Arc—creating dynamic spatial experiences that encourage pedestrian movement and interaction. The arrangement of buildings along radial streets enhances accessibility and visual connectivity across the site, facilitating a flow between diverse public spaces. The arcs are designed for various civic functions, including relaxation, community engagement, and historical reflection. A tunnel also links different zones within the square, ensuring modern amenities align with the site's historical context.

### Materiality and Sustainable Systems

The project focuses on a selection of materials that balance durability and aesthetic quality. Ultra-High Performance Concrete (UHPC) mixed with recycled content is utilized for its sustainability credentials, while robust steel structures support the cantilevered elements. Double-glazed windows are incorporated to improve energy efficiency without compromising the square's architectural heritage.

An advanced HVAC system features Energy Recovery Ventilation (ERV) to optimize air circulation and minimize energy usage. Additionally, solar panels mounted on the roof of the arcs contribute to the facility's renewable energy supply, reinforcing the commitment to sustainable practices. This blend of innovative materials and systems not only enhances energy efficiency but also sets a precedent for future urban developments.

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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.

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
Early bird registration deadline 19 November 2025

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

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