The Bosque Vertical do Centro Cultural de Belém (CCB) in Lisbon (Vertical Forest at CCB), designed by Francisco Caldeira Cabral, is an innovative vertical garden inaugurated in 2020. Spanning two 17-meter-high walls with 7,524 plant pots, it enhances urban biodiversity by attracting birds and insects (Ref 3). This project offers recreational and aesthetic benefits, making the entrance of the cultural centre into a green space (Ref 4). The garden helps reduce air pollution by absorbing pollutants and producing oxygen. It uses a drop-by-drop irrigation system made from recycled PVC, ensuring efficient water usage and retention (Ref 1). Furthermore, the garden improves air quality, aims to mitigate urban heat island effects, and conserves water (Ref 2, Ref 5).
Overview
Nature-based solution
- Nature on buildings (external)
- Green walls or facades
Key challenges
- Climate action for adaptation, resilience and mitigation (SDG 13)
- Climate change adaptation
- Environmental quality
- Air quality improvement
- Green space, habitats and biodiversity (SDG 15)
- Green space creation and/or management
- Habitat and biodiversity restoration
Principal problems in Functional Urban Area (FUA)
- Climate-Related Hazards
- Heat stress & Extreme temperatures
- Environmental Degradation
- Biodiversity loss
- Air pollution
Key priorities
Focus
Project objectives
Implementation activities
Climate-focused activities
Climate change adaptation:
- Increase urban vegetation cover to reduce urban heat island effect
- Implement green walls or roofs to lower indoor temperature and provide insulation
Main beneficiaries
- Citizens or community groups
Governance
Management set-up
- Co-governance with government and non-government actors
Type of initiating organisation
- Local government/municipality
- Public sector institution
Participatory approaches/ community involvement
- The project didn't involve any form of stakeholder participatory activities
Details on the roles of the organisations involved in the project
Project implemented in response to ...
Type of enablers
Financing
Total cost
Source(s) of funding
- EU funds
- Private Foundation/Trust
Type of funding
- Direct funding (grants, subsidies, or self-financed projects by private entities)
Non-financial contribution
Impacts and Monitoring
Environmental impacts
- Climate change
- Lowered local temperature
- Expected lowered local temperature
- Environmental quality
- Improved air quality
- Expected improved air quality
- Green space and habitat
- Increased green space area
- Achieved increased green space area
- Increased number of species present
- Achieved increased number of species present
- Enhanced support of pollination
- Expected enhanced support of pollination
Economic impacts
- Unknown
Socio-cultural impacts
- Health and wellbeing
- Gain in activities for recreation and exercise
- Expected gain in activities for recreation and exercise
- Education
- Increased awareness of NBS and their benefits
- Expected increased awareness of NBS and their benefits
- Other

Information about this nature-based solution was collected as part of the