Public spaces remain some of the most dynamic sites for unbuilt architectural experimentation, revealing how cities and architects can imagine accessibility, gathering, and civic identity. In this curated Unbuilt edition, submitted by the ArchDaily community, the selected proposals examine parks, pedestrian corridors, cultural landscapes, and open-access urban environments that invite people to meet, move, rest, and participate in collective life. Rather than treating public space as leftover terrain, these projects position it as essential infrastructure—shaping urban health, memory, and social interaction.
Seeking to create a fluid dialogue between architecture and its surrounding landscape, the study of topography embodies an awareness and exploration of the use of materials, self-sufficient strategies, low-maintenance solutions, and landscape designs that integrate into the natural environment and minimize the environmental impact of projects. Beyond recording variations in elevation, sun orientation, prevailing winds, or drainage slopes of the terrain, several architects in Argentina demonstrate a strong interest in developing architectural solutions capable of adapting to natural geographies and restoring the bond between nature and the human being.
In today’s dense, vertical cities, terraces—often overlooked as mere technical rooftops—are emerging as key spaces for reconnecting with nature, expanding residential functions, and offering moments of collective relief. Particularly in single-family homes located in compact urban areas, these elevated surfaces represent valuable opportunities to increase usable living space without occupying more land. By lifting daily life above street level, terraces open new ways of inhabiting the city, enabling a range of uses from leisure and contemplation to food production and social gathering. In contexts marked by limited green space and strained infrastructure, they hold the potential to generate what landscape architect Catherine Mosbach calls "additional layers of urbanity." Whether imagined as hanging gardens, gathering spots, edible landscapes, or wellness zones, terraces challenge the idea that the city ends at the top floor—inviting us to see the roof as a new kind of ground.
Swiss architect Valerio Olgiati has unveiled plans for Rruga Adem Jashari, a mixed-use development in Tirana, Albania, that seeks to blend urban living with the surrounding natural landscape. Positioned at the boundary between the city grid and an adjacent park, the project features three distinctive red concrete towers and a central white ziggurat. Combining residential, hospitality, and retail spaces, the development aims to create a seamless connection between the built environment and nature.
In a quest to enhance and attract new natural experiences to city centers, the design, planning, and revitalization of certain urban spaces align with strategies aimed at improving the quality of life for residents while maintaining a connection with nature rooted in the local landscape. Through technical solutions for wastewater treatment and stormwater drainage, improved accessibility, incorporation of recreational activities, introduction of native vegetation, and more, numerous parks, plazas, and gardens are integrated into urban and rural fabrics. These efforts seek to filter pollution, purify the air, address social issues, and promote experiences that foster connections between nature, biodiversity, and society.
The "Garden Futures" exhibition, currently showing at the Nieuwe Instituut in Rotterdam until April 13, 2025, explores the multifaceted history and future of the modern garden. Curated by Maria Heinrich and spatially designed by Frank Bruggeman, the exhibition presents the garden not only as a personal refuge, but also as a site reflecting broader political and commercial forces. The show's structure, divided into four thematic chapters, allows for a comprehensive exploration of the garden's evolution and its potential for future development.
The MonacoPavilion at Expo 2025 Osaka explores the fusion of Mediterranean and Japanese landscapes, creating a unique cultural dialogue through architecture and landscape design. The pavilion's design, centered around a harmonious blend of Mediterranean and Japanese garden elements, embodies Monaco's global initiatives and its commitment to environmental stewardship. Reflecting the Expo's theme, "Take Care of Wonder," the pavilion invites visitors to experience a captivating and serene environment that celebrates both nature and culture.
What is urban renaturalization? How is it possible to reintegrate nature into the urban environment? With increasingly limited access to nature for the population and growing exposure to environmental hazards such as noise or air pollution, resource scarcity, climate change, and more, the development of "renaturalized" spaces in cities is seen as a tool capable of improving the quality of life for citizens and designing spaces for gathering, resting, and leisure areas for the common good, while also balancing urban development with biodiversity and the benefits of ecosystems. One of the many architecture firms involved with this concept is 08014 arquitectura, based in Barcelona, which, through its Plaza-jardín Rocafort and Paseo Comte D'Ègara projects, aims to revitalize certain urban areas, paying particular attention to improving the quality of life for citizens and their connection to the natural environment.
Pitched roofs and terraced lots or hillsides are some of the oldest, yet still highly functional, solutions for rainwater dispersal, redirection, and erosion management. While most constructions today still opt for traditional pitched or flat roofs, advancements in construction materials and techniques are leading to greater design exploration and layout variations. This has resulted in a rise in green roofs, passive insulation solutions, and more innovative uses of rooftops. One particular case has been the recurrence of the staircase or terraced roofs that often bring about a smooth continuity with the site and provide additional functional spaces to the project.
The almost cliché image of the white picket fence has become synonymous with the ideals of the American Dream. Behind the fence, there is invariably a perfectly manicured lawn, a green carpet upon which life can unfold. This image and its associations are not, however, accidental. In her book, "Domesticity at War", Beatriz Colomina notices that, since the Second World War, the lawn has taken a central space in the imagination of the country, becoming first a in order to make space for diversity, both social and ecological. symbol of the stability of the homes soldiers were hoping to return to, offering a space where those at home could still perform duties for the nation, and, after the war, propagating the image of an idealized lifestyle, one maintained with hard work and dedication. In recent years, the lawn has emerged once again as a site of conflict, this time between those hoping to preserve this idealized image, and those seeking to break the uniformity in order to make space for diversity, both social and ecological.
Faced with the aging of the global population, one of the most significant social transformations of the 21st century is anticipated. The design of patios, gardens, terraces, and other green areas in facilities for the elderly presents an opportunity to foster interaction, participation in various collective activities, and the establishment of gathering spaces aimed at reducing loneliness among older adults while enhancing well-being and social interaction in connection with nature. How can built environments be created to adapt to the needs of older adults?
Whether rising to the highest room of the tallest tower in a Disney-esque castle, giving an admirer the chance to confess their love on an apartment buildingfire escape, or connecting a basement or attic room with a decorative period feature, there’s something unavoidably romantic about spiral staircases. But there’s more function behind these coiling forms than just their good looks.
One common-held theory is that spiral staircases were first installed in historic castles as vertical baffles, tiring out enemy infiltrators before they could make it to the top. This is why – it is said – many are set to turn clockwise on the ascent, so attackers have a smaller arc for swinging weapons (mostly held in right hands) than defenders making their descent.
While hybrid working and flexible hours represent the most obvious ways to improve work/life balance for many, because of the missed social interactions and the lack of space or functionality at unproductive home workspaces, the majority of 16-24-year-olds are the only age group who prefer to work from the office.
The early 20th century marked a pivotal era in Brazilian architecture with the advent of the modernist movement. Architects like Oscar Niemeyer or Lúcio Costa introduced avant-garde designs characterized by sleek lines, reinforced concrete, and a focus on functionality. What's more: residential projects of the era, in particular, blurred the lines between indoor and outdoor, flawlessly merging interior and exterior spaces to reflect a lifestyle that harmonizes with nature. Fast forward to the present day, and contemporary architects and designers in Brazil continue to embrace the challenge of creating indoor-outdoor homes that nod to the country's tropical climate. These residences often feature open floor plans, expansive glass walls, and strategic positioning of courtyards, gardens, or terraces with a design philosophy that emphasizes natural light, ventilation, and the incorporation of greenery for increased well-being. We take a detailed look at four recently completed residential projects in Brazil that fuse contemporary architecture, sustainable living, and a deep appreciation for their natural surroundings.
Courtesy of Danish Landscape Award | H.C. Andersen Garden
The Danish Landscape Award 2023 has been awarded to the H.C. Andersen Garden, designed by MASU Planning. The award focuses on honoring landscape architectural works with character, serving as “inspiration” for the industry. Situated in Odense in Denmark, this year’s winner was praised for reviving urban renewal in the city center by creating an escape that blends with the existing context.
As the temperature drops in the Northern Hemisphere, cold outdoor spaces are overcome with frost, ice, and snow, and we find ourselves rushing from one heated indoor environment to the next, less willing or less able to stop and appreciate the natural world around us.
Apart from dragging a spruce or fir tree inside and dressing it up in yuletide costume, we tend to leave the real natural world to its own seasonal devices until it reemerges in Spring. However, by inviting the positive effects of plant life into our homes, we can improve both our mental health and the air we breathe by filling them with peace and joy all year round, not just at Christmas.
Today is the premiere of the first episode of a new documentary series that explores the projects of Al Borde. Titled "Building with Living Trees", this first instalment highlights the stories behind Casa Jardín (Garden House), a single-family home located in the suburban area of Quito, Ecuador.
Designed for an ecologist named José, the residence is developed into three small independent pavilions with hybrid structures that combine living trees with various construction systems. These structures utilize a vernacular technique of living fences that has been employed in the Andes since ancient times, showcasing a genuine pursuit of coexistence between architecture and nature.
