The Sax residential towers by MVRDV. Render. Image Courtesy of MVRDV
The City of Rotterdam, developers BPD and Synchroon, and architecture firm MVRDV have officially begun construction on The Sax, a major residential project located on Rotterdam's Wilhelminapier. Designed to contribute to the city's ongoing densification efforts, the development will deliver 916 apartments within two interconnected towers. Once completed, The Sax will make Wilhelminapier the most densely populated area in the Netherlands, making the project an example of compact urban growth. The design comprises two towers, combining a wide mix of housing types and shared amenities with strong connections to public transport and sustainable mobility solutions, including parking for 1,800 bicycles and a fully automated car garage. With its silver façade and undulating balconies, the building's form echoes the shape of a saxophone, reflecting the character of Rotterdam.
As cities continue to expand upward, the office tower remains one of the most visible symbols of architectural ambition and urban evolution. No longer defined solely by efficiency or corporate image, contemporary workplace architecture is being reimagined as a hybrid ecosystem, one that balances density with daylight, productivity with well-being, and technology with material and spatial integrity. The following unbuilt projects, submitted by the ArchDaily community, reveal how architects across continents are rethinking the typology of the tower, turning verticality into an opportunity for connection, adaptability, and sustainability.
From India's Shivalik Curv and Embassy Zenith, where form and movement are combined to redefine skyline identity, to Dungen in Sweden, a low-rise timber office that mirrors the calm of a forest grove, each project explores how workplaces can become more flexible, humane, and environmentally conscious. In Kyiv, APEX Business Center positions itself as a catalyst for urban vitality, while Jakarta's BNI Tower PIK 2 transforms the corporate tower into a crystalline symbol of growth. In Munich and Ankara, mixed-use concepts like Highrise Hufelandmark and Rhythm Ankara explore the office as part of a broader civic landscape, where work, leisure, and public life intersect.
Oricon Tower project by Eduardo Souto de Moura and OODA. Exterior render. Image Courtesy of Plomp
Eduardo Souto de Moura and OODA have unveiled the design of the Oricon Tower, a 180-meter mixed-use skyscraper planned for Tirana, Albania. Located near OODA's recently completed Bond Tower, the project is part of the city's ongoing transformation under the Tirana 2030 Masterplan, which envisions a denser and more connected urban core. The tower will house offices, residences, retail areas, and a hotel, contributing to the city's evolving skyline and serving as a new urban gateway between Tirana's historic center and its expanding western districts.
The island of Taiwan presents a varied natural and topographical context, characterized by a land area of 36,197 square kilometers and a high population density of 644 people per square kilometer. Its geological location, situated on the edges of the Eurasian and Philippine Sea plates, has resulted in a predominantly mountainous and rugged topography. While this forces the majority of the 23 million residents to inhabit large urban centers on the western coastal plains, the island maintains an active agricultural sector, with approximately 22% of its land allocated to farming.
Across Asia, bamboo scaffolding has symbolized an intersection of traditional knowledge and modern construction. Hong Kong's skyline is shaped by intricate bamboo scaffolding, yet this time-honored craft is steadily vanishing from the region. Moving east, Indian cities still utilize bamboo scaffolding on building sites throughout the subcontinent, revealing a different kind of paradox.
The 39 storey Sudameris Plaza office tower. Image Courtesy of Foster + Partners
Foster + Partners has won an international competition to design the headquarters of Sudameris Bank in Asunción, Paraguay. The project, named Sudameris Plaza, is a 39-storey office tower featuring an exposed concrete frame and an angular form. It includes a landscaped plaza, art gallery, auditorium, and a large public garden at the tower's base. The studio aims to integrate greenery throughout the shared spaces of the building, fostering a strong connection with nature from within the tower.
Heatherwick Studio has unveiled the first design images of Hatai, a new public space and two hotels in the heart of Bangkok's Silom district. The complex marks the studio's first project in Thailand and is located on the historic site of the original Narai Hotel, within a bustling business area. The project envisions 5,200 square metres of new public space, including elevated walkways and a publicly accessible ground level with retail and services. The building design draws inspiration from the craftsmanship of traditional Thai lanterns, featuring a series of stacked, rounded forms.
"Out of the Box" tower exterior render. Image Courtesy of MVRDV
MVRDV has released images of "Out of the Box", a 12,025 sqm residential tower in Tianmu, one of Taipei's northernmost neighborhoods. Designed for Win Sing Development Company, the project began in 2019 and was developed using a system of standardized elements digitally distributed based on criteria such as habitability, efficiency, and access to community services. These elements are expressed in the tower's irregular, gridded façade, which features a layered marble cladding.
Space has become a luxury in many of the world's most densely populated cities—a growing reality that's hard to ignore. Megacities like Tokyo, Shanghai, Mumbai, Mexico City, and São Paulo already have populations exceeding 20 million, while other urban centers across Asia and Africa continue to expand rapidly. Among these, Delhi stands out: if current trends continue, it is projected to become the most populous city by 2028. As these cities expand, housing—especially new developments—follows a new logic: as square meters shrink, furniture adapts, and daily life learns to fit and thrive in high-density environments. This change isn't just about size; it reflects a new way of living. Where spaciousness once dominated, density now rules. Every corner gains spatial and commercial value, with the kitchen emerging as one of the biggest challenges in housing design today.
A good conversation can make time feel like it's passing more quickly. But is this effect solely due to the verbal exchange, or could our perception of time be shaped by the spatial conditions surrounding us? There are environments that, due to their scale, distribution, and atmosphere, are conducive to meeting, listening, or pausing, thereby influencing the human experience. Perhaps it's not the words we share, but the space in which we speak that truly shapes our understanding of time. Some sociological theories about our society and the built environment go beyond considering it as a mere physical container and suggest that architecture, in its very duality, can act as both an inhibitor and a catalyst for our temporal experiences, impacting our wellbeing.
https://www.archdaily.com/1029304/wellbeing-and-slow-spaces-can-architecture-distort-the-way-we-experience-timeEnrique Tovar
India finds itself a watershed moment with its urban evolution. With the United Nations projecting urbanization to reach 68% by 2050, the country's metropolitan regions needs to adapt to increasing populations while maintaining equity and quality of life. India's urban population is expected to exceed 600 million by 2030, drawing attention to both urban density and sprawl. As an emerging player in the domain of high-rise development, India is restructuring how it engages with urban growth by shifting from horizontal sprawl to vertical expansion.
In contemporary urban development, the concept of Privately Owned Public Space (POPS) has gained increasing prominence. These are spaces that, while built, owned, and maintained by private developers, are legally required to remain publicly accessible. Often the result of negotiated planning incentives—such as zoning bonuses or increased floor area—POPS have become especially prevalent in dense urban environments where land is limited and demand for public amenities is high.
Sustainability in architecture is often framed as a universal challenge, leading to standardized solutions that prioritize efficiency over context. However, architecture is inherently tied to its environment — buildings interact with climate, topography, and cultural history in ways that demand specificity. Instead of relying on standardized sustainability checklists, how can architecture embrace site-specific solutions? This conversation is deeply connected to the concept of Genius Loci, or the spirit of a place, introduced by Christian Norberg-Schulz and embraced by architects advocating for designs that resonate with their surroundings. It suggests that architecture should not be imposed upon a site but rather emerge from it, informed by its materials, climate, and cultural significance. This philosophy challenges the widespread application of generic sustainable technologies, instead proposing that sustainability must be inherently tied to the location in which it operates.
Diller Scofidio + Renfro has unveiled the design for the new Frederick S. Pardee School for Global Studies at Boston University, a project aiming to integrate sustainability, urban density, and interdisciplinary collaboration. The 70,000-square-foot building will rise 186 feet, making it the tallest mass timber tower in the Northeast United States. Situated on a former parking lot at the heart of the university's campus, the structure will occupy just 10% of the site, allowing for the creation of a central green space in the future.
Chinese architect and educator Liu Jiakun has been announced as the laureate of the 2025 Pritzker Architecture Prize, the highest honor in the architecture field. This prestigious award recognizes Jiakun, founder of Jiakun Architects (established 1999), for his ability to blend traditional Chinese elements with contemporary design and for his commitment to social equity in the built environment. Born in Chengdu, China, where he continues to live and work, he becomes the second Chinese architect to receive the accolade, following Wang Shu (2012). Jiakun joins a distinguished list of previous laureates including Riken Yamamoto in 2024, David Chipperfield in 2023, and Francis Kéré in 2022. The award ceremony will be held this spring at the Jean Nouvel-designed Louvre Abu Dhabi, with a global video release of the presentation this fall, followed by the 2025 Laureates' Lecture and Symposium in May.
As cities grow and available land becomes more limited, high-rise architecture plays an important role in addressing urban density while shaping new ways of living and working. Tall buildings are evolving beyond their traditional functions to integrate environmental strategies, enhance public engagement, and contribute to the urban fabric. Architects are exploring new materials, energy-efficient technologies, and spatial configurations that make towers more adaptable to their surroundings. Some projects incorporate green spaces and shared amenities to create a stronger connection between the built environment and its users, while others introduce innovative construction techniques to improve sustainability and efficiency.
Among this selection of projects submitted by the ArchDaily community, The Residences at 1428 Brickell by Arquitectonica in Miami, United States introduces a solar-powered facade that contributes to the building's energy needs. In Dubai, UAE, AVA by SOMA creates a transition from the city into a more enclosed, water-defined environment with a focus on luxury living. In Bangkok, Thailand, HAS Design and Research proposes the Bangkok Civic Center Tower as a new type of public space, combining green landscapes with mirrored surfaces to connect the city with nature. These projects reflect different approaches to vertical architecture and highlight how designers are responding to the challenges and opportunities of dense urban environments.
When discussing modernist living, several iconic private residential projects may first come to mind—Le Corbusier's Villa Savoye, the Case Study Houses, most notably by Richard Neutra, Pierre Koenig, and Charles and Ray Eames, as well as the glass houses by Mies van der Rohe and Philip Johnson. Most of these projects exemplified an idealized vision of modern living, set in picturesque landscapes and characterized by experimentation with new construction methods, materials, and spatial concepts. Their designs embraced openness, blurring the boundaries between private and public spaces, largely unburdened by constraints such as density, efficiency, accessibility, public transit integration, or communal considerations.
While these modern homes remain influential in contemporary residential design, they also—perhaps unexpectedly—laid the groundwork for high-density housing principles. Concepts such as the interplay between public and private space, modular construction, and prefabrication, initially explored in these private residences, have been adapted to the vastly different constraints of social housing.
