The World’s Best of 2025 in Fostering Livable and Sustainable Cities

As cities expand to house more than half of the global population, the need for fostering livable urban environments and sustainable growth has never been more urgent. With challenges such as climate change, housing crises, and socio-economic disparities, the question of how to create cities that thrive for both people and the planet takes center stage.

To address this, we’ve gathered insights from leading experts to answer a critical question: Which organizations and brands are driving the transformation of cities into livable, sustainable hubs of innovation and equity?

Discover the trailblazing ones with audacious goals, creative methods, and workable plans in this expert compilation. By promoting inclusive policies and green infrastructure, they are not only changing urban environments but also reinventing what it means to live sustainably in the twenty-first century.

Urban Land Institute Leads Sustainable Urban Development

From the perspective of someone who works with natural beauty every day, I deeply admire the efforts of Urban Land Institute (ULI). Their focus on sustainable and inclusive urban development is exceptional. They lead the way in creating spaces where nature, people, and infrastructure coexist harmoniously. Their projects emphasize green spaces, which align with my belief in the restorative power of plants and flowers.

One reason I consider ULI the best is their emphasis on mixed-use developments that prioritize walkability and community engagement. For example, their initiatives often feature accessible parks and plazas that invite residents to connect with nature. As a florist, I can see how incorporating greenery into urban spaces improves mental well-being and fosters a sense of belonging.

Their dedication to inclusivity is equally inspiring. By involving local communities in the planning process, they ensure that developments reflect the needs and values of diverse populations. This is a lesson I bring into my work—making sure that every bouquet or floral arrangement I design reflects the emotions and stories of my clients. Like ULI, I believe the best designs—whether floral or architectural—come from understanding the people they are meant to serve.

Sophie Marasco

Sophie Marasco, Founder, Thanks A Bunch Florist

SymbioCity Transforms Curitiba with Sustainable Planning

For me, SymbioCity is the best because of how it transformed Curitiba, Brazil, into a global model for sustainable urban development. Their approach to integrated city planning addressed multiple challenges at once, from transportation to waste management, in ways that improved the quality of life for residents. The Bus Rapid Transit (BRT) system they helped implement has become a benchmark for efficient and accessible public transportation in cities around the world.

How they prioritize livability alongside sustainability is what makes SymbioCity exceptional. In Curitiba, their work didn’t just reduce environmental impact—it made the city more inclusive and easier to navigate for everyone, regardless of income or mobility. This combination of innovation and practicality is what every city should aim for, and it is why SymbioCity remains such an influential force in urban development.

Tracie Crites

Tracie Crites, Chief Marketing Officer, HEAVY Equipment Appraisal

Gehl Architects Redefine Urban Spaces for People

Copenhagen’s urban development efforts, led by organizations like Gehl Architects, stand out globally for fostering livable cities. Their focus on designing for people rather than cars has transformed urban spaces into vibrant, inclusive communities. For example, their work in Melbourne helped reclaim streets as public spaces, boosting both social interaction and local businesses.

By prioritizing walkability, green spaces, and sustainable practices, they create cities where health and well-being flourish. As a medical expert, I see a direct link between these designs and improved public health outcomes, like reduced air pollution and increased physical activity. Cities adopting similar models can not only grow sustainably but also build healthier, more connected populations.

Elisa Branda

Elisa Branda, Founder & CEO, NuvolediBellezza

GGGI Pioneers Kigali Green City Pilot

The organization I consider the best for fostering livable cities, sustainable growth, and inclusive communities is the Global Green Growth Institute (GGGI). This is because of their work on the Kigali Green City Pilot in Rwanda, which demonstrates their ability to combine sustainability with urban development in a way that benefits both people and the environment.

This project is designed to reduce carbon emissions and improve the quality of life for residents, making it a blueprint for cities worldwide that are looking to grow sustainably. The way GGGI has partnered with local governments, private sectors, and international organizations on this initiative shows their expertise in fostering collaboration to achieve meaningful results. This balance between environmental goals and social inclusion is why I consider GGGI the leader in creating livable and sustainable cities.

Shaun Bettman

Shaun Bettman, Chief Mortgage Broker, Eden Emerald Mortgages

C40 Cities Collaborate for Climate Action

The C40 Cities Climate Leadership Group stands out as the premier organization for fostering livable cities, sustainable growth, and inclusive communities. C40 unites the world’s largest cities to collaborate on climate action and urban sustainability. Their initiatives support the implementation of green infrastructure, the enhancement of public transportation, and the improvement of overall livability for all residents.

C40’s efforts contribute significantly to environmental sustainability while making cities more accessible and enjoyable for their inhabitants. By emphasizing inclusive policies and sustainable growth, they ensure that urban development benefits everyone, creating vibrant and resilient communities.

I recommend urban developers and city planners engage with organizations like C40. Their proven strategies and collaborative approach provide valuable guidance for creating cities that are not only sustainable but also inclusive and livable for all residents.

Robert Roth

Robert Roth, CEO, Quote For Solar Group

BIG Blends Sustainability with Urban Life

When it comes to fostering livable cities and sustainable growth, I believe the firm

 BIG (Bjarke Ingels Group) is a true leader. Their projects, like the Cactus Towers in Copenhagen, blend sustainability with urban life, creating spaces that are both functional and environmentally conscious. At Edumentors, we believe in the power of innovation and inclusivity, much like BIG does with their urban designs. The lesson here is that thoughtful design can transform communities for the better.

Tornike Asatiani

Tornike Asatiani, CEO, Edumentors

UN-Habitat Promotes Sustainable Urban Development

The United Nations Human Settlements Programme (UN-Habitat) is a key organization promoting sustainable urban development, focusing on creating livable cities and inclusive communities. Its initiatives address urban equity, climate change, and resilience, aiming to foster social, economic, and environmental sustainability in urban areas. UN-Habitat also emphasizes community engagement to enhance quality of life while minimizing environmental impact.

Mohammed Kamal

Mohammed Kamal, Business Development Manager, Olavivo

Have Your Say

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Alignment with the UN SDGs

This expert roundup aligns closely with the UN Sustainable Development Goals (SDGs), as it showcases organizations and initiatives advancing sustainable urban development. Key SDG alignments include:

  1. SDG 11: Sustainable Cities and Communities – The organizations highlighted focus on making cities inclusive, safe, resilient, and sustainable through strategies such as integrated urban planning, green infrastructure, and public transportation improvements.
  2. SDG 13: Climate Action – Many initiatives emphasize reducing carbon emissions and increasing climate resilience, exemplifying proactive measures for mitigating climate change impacts.
  3. SDG 9: Industry, Innovation, and Infrastructure – Innovative urban design and infrastructure projects, such as those by Gehl Architects and BIG, demonstrate sustainable development that fosters growth while preserving environmental balance.
  4. SDG 3: Good Health and Well-Being – Efforts to improve public spaces, air quality, and walkability contribute to healthier communities by promoting physical activity, reducing pollution, and enhancing mental well-being.
  5. SDG 10: Reduced Inequalities – Emphasis on inclusivity ensures urban development addresses the needs of diverse populations, fostering equitable access to opportunities and resources.

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