Urban nature isn’t a decorative layer.
It cools streets, filters water, reduces floods, supports pollinators—and improves human wellbeing.

Urban biodiversity is working infrastructure, not scenery. When design begins with ecology—not just adding greenery—the returns multiply:

• Cooler microclimates

• Flood mitigation

• Cleaner air and water

• More vibrant public life

• Stronger local identity

These outcomes don’t happen by accident. They come from projects that start with ecology, make water visible, connect green patches, and link long-term stewardship with community benefit.

Below is a journey through selected Holcim Foundation Award-winning projects to show how cities can move from “biophilic décor” to truly biocentric systems.

1. From Simple Lawns → Habitat Structure

Lose the Lawn | Shift to Habitat-Led Green

Urban Nature Project – Natural History Museum | United Kingdom

Research shows that increasing vegetation complexity—layered planting, living soils, wet edges, deadwood—is among the strongest levers to boost urban biodiversity. Adding shrub and understory layers with modest water features significantly increases urban bird richness [1].

The Urban Nature Project transforms five acres into a habitat mosaic: woodland, grassland, scrub, heath, fen, reed beds, hedgerows, urban British habitats, and wetlands.
A biodiversity-first layout guides human movement through winding paths and elevated walkways to protect sensitive zones.

It is a powerful example of how cultural institutions can anchor nature as everyday urban infrastructure.

2. Let Water Lead — Build Blue–Green Spines

Elevate the Flow | Make Blue–Green Systems the Urban Backbone

Wetland Vitality | Colombia
Green-Blue Network | China

Healthy biodiversity depends on water that can flow, slow, soak, and support life. Blue–green networks combine waterways, wetlands, swales, and permeable surfaces with trees, meadows, and parks—treating rain as a resource. They create layered habitats that support plants, invertebrates, amphibians, and birds.

Bogotá — Wetland Vitality

A damaged 5.5-km wetland is restored into a linear park that:

• Serves as a growth boundary

• Controls floods

• Recharges aquifers

• Filters water

• Reintroduces native plants

• Creates a continuous ecological corridor

Shenzhen — Green-Blue Network

Concrete canals are reconfigured into terraced wetlands with lush vegetation. Recycled concrete becomes gabions and boardwalks. Mangroves and wetland plants naturally purify wastewater, which is reused for irrigation.

When drainage performs like a landscape, cities gain biodiversity and public space at the same time.

3. Connect the Green → Create Ecological Corridors

Stitch Sites Together | Multiply Impact with Corridors

Stream Co-Habitat | Türkiye

Isolated parks function as ecological islands. Biodiversity thrives when cities create connected networks that allow species to move, feed, and reproduce.

The Stream Co-Habitat transforms the Umur Stream into a 9-km green corridor connecting schools, civic buildings, housing, and linking a lake to the sea.
Its strength lies in its simplicity: an ordinary local waterway becomes an ecological spine and shaded mobility route.

4. Ecology + Community = Long-Term Stewardship

Highlight the Benefit | Pair Ecology with Social Infrastructure

La Quebradora Hydraulic Park | Mexico

Urban nature becomes more resilient when integrated with learning, sport, culture, and care. People protect what they use, enjoy, and understand.

La Quebradora reimagines a neglected space as both an ecological filter and a social hub:

• A treatment wetland restores hydrology

• Runoff is slowed and cleaned

• Shaded walkways, play areas, sports courts, and cultural spaces activate daily life

The landscape is the infrastructure, allowing people to experience the water cycle firsthand.

Nature-Led Cities Are the Cities of the Future

To remain liveable in an unequal and volatile century, cities must:

• See biodiversity as core infrastructure

• Shift from scattered greenery → connected blue–green networks

• Move from cosmetic planting → habitat-led landscapes

• Evolve from short-lived projects → community-embedded spaces

Do that, and the benefits compound:
✔ Cooler streets
✔ Cleaner water
✔ Less damaging floods
✔ Richer public life
✔ More adaptive ecosystems

This isn’t a luxury—it’s the fastest, most cost-effective way to build urban resilience and civic wellbeing.