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Located in the south of the town, this garden is an ideal place for family walks. Very popular, it also responds to a scientific vocation for the conservation of plant species from the five continents. In the spring of 2013, the Jardin des Plantes was enriched by a honey garden with a pedagogical vocation, which houses plants whose juice is used by bees to produce honey. The City of Rouen undertook the renovation of historic greenhouses, work on which was completed in 2019. The objective is to enhance the treasures of this extraordinary greenery (Ref. 1). "The collections reach more than 6000 species and the garden contributes to the development of sciences, to the preparation of medical students and to the dissemination of species, thanks to the exchange of seeds" (Ref. 10).

The community garden "Les Hauts Sèment" is located in Rouen in the district of Lombardy, being the first community garden of Rouen animated by the city in 2011. It is "an educational garden which has been created and is maintained by the gardener in association with users wishing to invest in the association. It is supported by different animations" (Ref. 1 and 2, page 12).

After Local Community consultation, a pocket park was created in Luton Millenium Green to facilitate community engagement and a sustainable legacy for future generations. The project included the installation of pathways, clear invasive vegetation, common vegetable planters, wildflower and enclosed areas and an orchard with 30 trees (ref 1, 3).

The project was developed as an integration garden for the visually impaired managed by the "La Lumière" ABSL (not-for-profit organization) and for the children hospitalized in the Citadel Hospital and for people hospitalized in psychiatry (Ref. 1). On their large terrace, they installed several bins in height to accommodate the vegetables. This garden is used for hospitalized children but also for adults admitted to psychiatry who find activity and serenity there. Since March 2008, the patio adjoining the garden has been designed to allow visually impaired and blind people to garden, and even a small corner is designed specifically for them in the kitchen garden (Ref. 2).

The regeneration of the square in Catania has been envisioned since 2016 and completed in 2017. Apart from the changing rules in the accessibility of the square, the central area was equipped with a large flowerbed and additional trees and plants of different geographical origins. The whole green area provides illumination infrastructure, benches and bins to collect trash. This is expected to improve the whole area, and to create a new place of social inclusion and meeting point. (Ref.1.)

The Green Grid aimed to link urban and rural neighborhoods with a network of quality green spaces and corridors of landscape, recreational and ecological value. The aim was to achieve the added benefits by managing open space resources as a set of linkable sites rather than in isolation. It was a planning intervention that was focused on connecting a high quality, functional green space network (Ref 1). The intervention was part of "Greening the Gateway Kent & Medway" (Ref 2).

This intervention involved the removal of sediment and revitalization of the banks along with the rehabilitation of the urban part of the Segura River in Murcia. This was done to strengthen the environmental condition of the river and improve the visual aspects and the access of citizens to the river (Ref 3 and 7). In 2020, they are building the second part of the project, where the aim is to build three different walkways that join the two sides of the rivers and that will connect specific places along with it (Ref 5).

The Natural Park of Collserola (about 8,000 ha) is a forested area in the hilly Northern fringes of Barcelona. Since 1987, Collserola has been managed under a special protection plan and forms part of the European FEDENATUR network that aims at protected fragile peri-urban ecosystem for both their social and ecological functions. The park is jointly managed by a consortium including the Catalan government (Generalitat de Catalunya), the Barcelona Provincial Council (Diputació de Barcelona), the Metropolitan Area of Barcelona (AMB) as well as all adjacent municipalities (Ref 1).

The Parc Agrari del Baix Llobregat is located in the floodplains of the delta and lower valley of the river Llobregat, in the Catalan county of Baix Llobregat, in a central position within the metropolitan area of Barcelona. The territory of the park (nearly 3500 hectares), includes a rich traditional agricultural activity and comprises fourteen municipalities totaling about 818,000 residents. It is protected by a specific planning instrument and managed by the Barcelona Provincial Council (Diputació de Barcelona) (Ref. 1 and 9). The park acts as a green lung for the metropolitan area of Barcelona and at the same time as a pantry for Mercabarna, the large wholesale market that provides food and drink to the inhabitants of Barcelona and surrounding towns, although there is also production that is exported (Ref. 10). The Agrarian Park is the only one in the world so close to a large city and it promotes specific programs to preserve the productive values of the agricultural space and promotes quality local products and local consumption. (Ref. 10)

The Tree Master Plan of Barcelona is a long-term (20-year) plan, running from 2017 to 2037. The ultimate goal of the Tree Master Plan is to ensure the presence of dynamic, healthy and diverse urban trees in Barcelona. According to the Plan, urban trees are essential for green infrastructure and for creating quality public space in the city. An innovative feature of this intervention is the use of biological approaches to the tree maintenance (no pesticides or chemicals) (Ref 1, 2 and 3).