Widespread Sustainability Festival – EcoSistema Urbano
Three days of walks, meetings, and workshops on the city as an ecosystem, in Siena
About Widespread Sustainability Festival
A festival spread throughout the city of Siena
The Widespread Sustainability Festival – EcoSistema Urbano is an event held in Siena, the capital of the province of the same name in Tuscany. Its distinctive feature is in the name itself: it is a widespread festival, without a single hub or vertical artistic direction, which transforms the city into a network of places and encounters. For three days, urban spaces, green areas, vegetable gardens, valleys, and nature reserves become stages where the focus is on the environment, community, and the future.
Who organizes the festival
The event is promoted by the EcoSistema Urbano Siena group, created within the Municipality of Siena thanks to the participation of local entities, associations, and organizations committed to sustainability issues. Partners include the Fondazione MPS, the SART – Siena Art Institute, the Propositivo (PRO+) APS association, and TVspenta APS, as well as the Territorial Alliance for Carbon Neutrality Siena, which provides information on provincial decarbonization projects. The initiative is part of the projects funded by the Ministry of Culture under the PNRR – Next Generation EU framework.
What to expect
The program weaves together different languages and audiences, with a particular focus on active citizen participation. Proposals range from guided nature excursions to workshops for children, scientific meetings to book presentations, and conferences on the city's environmental strategies.
- Walks and guided tours in the green areas and valleys of Siena
- Workshops and activities for families and children
- Meetings with experts, researchers, and authors
- Presentation of the EcoSistema Urbano group and municipal environmental strategies
The city as an ecosystem
The underlying idea is simple and powerful: to look at Siena as a true ecosystem, where the environment, people, and culture are part of a single balance. The central event, hosted on the San Domenico bastion of the Fortezza Medicea, focuses on this very vision, presenting the sustainability strategies launched by the Municipality. For those visiting Siena, it is a unique opportunity to discover the city: not just its squares and monuments, but also its green spaces and the network of entities working to make it more livable.
An event for everyone
Almost all appointments are free to enter, with some activities requiring reservation. The festival is aimed at anyone wishing to experience Tuscany in a slow and conscious way, combining the beauty of the Sienese landscape with reflection on environmental, social, and economic sustainability.
Widespread Sustainability Festival — edition 2026
The 2026 edition enlivened Siena from May 22 to 24 with widespread events in urban spaces and green areas. Between environment, science, and community, the festival involved families, students, and citizens in a three-day journey dedicated to sustainability.
The central event, "The city as an ecosystem", was held on Saturday, May 23 at 6:30 PM on the San Domenico bastion of the Fortezza Medicea, with the presentation of the EcoSistema Urbano Siena group and the results of the "Guess How to Act" project.
Programme Widespread Sustainability Festival 2026
Friday, May 22
- 9:00-12:00 — Boschetto di San Miniato: "Scientists for a day – Discovering plants and animals guided by experts"
- 12:30-13:30 — San Francesco Presidium (University): "Europe Day in the Garden"
- 16:00-18:00 — Palazzo del Capitano: "Ecology of happiness", meeting with Prof. Stefano Bartolini, and "Voice of the Network", collective singing
- 17:30 — Natural History Museum: book presentation on urban biodiversity
Saturday, May 23
- 9:00 — Montecellesi Nature Reserve: guided nature walk
- 9:30-12:30 — Valle di Ravacciano: walk on environmental regeneration
- 16:00-18:00 — Secret Garden (Camollia): "Follow the Green – 72 hours of biodiversity"
- 18:00 — Teatro dei Rozzi: children's show "Little Red Riding Hood"
- 18:30 — San Domenico Bastion, Fortezza Medicea: "The city as an ecosystem", central event with the presentation of the EcoSistema Urbano Siena group and municipal environmental strategies
Sunday, May 24
- 9:30-12:30 — Casa dell'Ambiente Auditorium: "On the wolf's trail... Between fairy tales, alleys, and true stories" (for children)
- 10:00 — Fortezza Medicea: "Relief Walk"
- 15:30 — Fonte delle Monache: guided tour
The Territorial Alliance for Carbon Neutrality Siena was also present with information material on provincial decarbonization projects.
Highlights Widespread Sustainability Festival 2026
The highlight was the meeting "The city as an ecosystem" on the San Domenico bastion of the Fortezza Medicea (Saturday, May 23, 6:30 PM), with the official presentation of the EcoSistema Urbano Siena group. Also noteworthy were the meeting "Ecology of happiness" with Prof. Stefano Bartolini and the nature walks in the green valleys of Siena.
Prices Widespread Sustainability Festival 2026
Practical information — Widespread Sustainability Festival
How to get there
Siena can be reached by car via the Florence-Siena highway (Siena exit) or the SS73 and SS223 roads. By train, Siena station is connected to Florence and Empoli; from the historic center, which is largely pedestrianized, you can easily get around on foot.
Event venues
The events take place in various locations across the city: Fortezza Medicea, Boschetto di San Miniato, Palazzo del Capitano, Natural History Museum, Valle di Ravacciano, Casa dell'Ambiente, and other green spaces.
Admission and reservations
Most events are free; some activities require a reservation. Detailed program and contacts available at sienacomunica.it.
Contacts
Email: [email protected]
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Where does it take place — Widespread Sustainability Festival
Fortezza Medicea (bastione San Domenico) e vari spazi della città