Transformation of previously derelict areas

The gardens of the Rambla de Sants is an elevated linear park (similar to the High line of New York) located in the Sants district of Barcelona (760 meters long and about 6 ha size). It is located over the structure of train and metro lines. It was opened to the public in August of 2016. The gardens include mainly native plantations, playground areas, and other facilities (Ref. 2).

The orchard of the Vallon was established by the city in an area that had historically served as an orchard fifty years previous (Ref. 9). A few pear trees had survived and gave rise to the idea of ​​reconstituting it. In 2014, the city planted apple, peach, pear, cherry, apricot and other fruit trees on one and a half hectares of greenery. "At the beginning of 2015, the association Le Verger du Vallon was born. With its members, its mission is to maintain these trees with a view to sharing knowledge and educational exchanges "(Ref. 9). "Called upon by the city of Rouen for the establishment of a participatory orchard, the social center wished to promote this project among the inhabitants within the framework of the arrow projects of the CAF (social security) de la Seine Maritime entering the field of financing "to support a cooperative project of residents initiated and built with them from a common concern " (Ref. 3, page Description).

The city of Rouen has been redeveloping the docks of the Seine River over a number of years. The Prairie Saint Sever (park) is one part of this redevelopment planning. Completed in 2017, this park "allows its inhabitants to reclaim their river and offer new spaces of use" (Ref. 5) with "generous alleys lined with six hundred trees, cycle paths, original children's games, metal slides grafted to the stairs of the Jeanne-d'Arc bridge, picnic benches and tables, wooden deckchairs encouraging reading or idleness, sports apparatus and rollerblading equipment ... today, Rouen residents can enjoy a walking park of twenty-three hectares and more than three kilometers long, between the Corneille bridge and the Rollet peninsula" (Ref. 6).
It is a prairie in the heart of the city offering a large river walk on more than 3km (Ref. 2).

Emscher Landschaftspark is a regional park system in the northern Ruhr area. It is a regional cooperation project between several post-industrial cities that want to create a coherent park system and regenerate natural environment in the area (Ref. 1). A crucial vision for the redevelopment is that the Emscher Landscape Park would act as a "green connector" between the settlements of the Rhur valley, following the path of the Emscher River and using the abandoned industrial areas along it as a unique form of green space (Ref. 6). "Created after the disappearance and decline of the industry in the area, it has been a key instrument for the territorial, social and economical transformation of what was once the largest industrial region in Europe" (Ref. 12).

Situated next to Bebington railway station, the site is of biological importance within Wirral. This urban nature reserve was developed on a former railway sidings and is now an oasis of green tranquility in densely populated urban area; its industrial past has been put to good use as a home for wildlife (e.g. on the thin, nutrient there are now carpets of wild flowers, including wild carrot & occasional bee orchids). Up to 26 species of butterfly have been recorded here, with 18 species breeding on site - giving the park its rather apt name. (Ref. 1, 2)

New Ferry Butterfly Park has been awarded a Green Flag for the seventh year, which signifies that the space boasts the "highest possible environmental standards, is beautifully maintained and has excellent visitor facilities". (Ref. 12)

The municipality of Catania, in collaboration with the University of Catania promotes sustainable agricultural practices in specific areas of the city with the project “Urbanhort” (Uban Horticulture systems for Resilient, Efficient and Sustainable cities). The main focus of the project was placed on biological, indoor and vertical gardening. The main goal of the intervention is to give value to the territory, to increment tourism, culture and the environment. What wanted to be tested was the efficiency of the practice in terms of price, health outcomes and the promotion of a correct diet. (Ref.1.)

The project might still be ongoing, however, no information was found on the website of Catania's municipality or on the website of the University of Agriculture of Catania for a later date that can show the current stage of the project (as of July of 2020).

‘De Schilde’ in The Hague was the former factory of Philips Telecommunication that had been empty for years. In 2016, it become the home to the largest commercial city facility for food production in Europe: a 1,200 m2 roof greenhouse for specialized vegetables, a 370 m2 covered fish farm and a 250 m2 area for integrated processing and packaging. In addition, 250 m2 within the farm was exclusively reserved for events and guided tours. (5) The farm comprised two-storey greenhouses on the roof and uses the UF system for the sustainable production of fish and vegetables. (5) The urban farm was initiated by the the municipality of the Hague and realised by Urbanfarmers, a Swiss technology company focused on building food production facilities in cities (5).

However, the initiative wasn't successful. In 2018, the company declared bankruptcy and terminated production in the rooftop farm as it did not produced any revenues. (12,13).

The Green Corridor Bernetal developing on the site of the former sewerage system will link the downtown of Essen with the districts of Altenessen and Freiräumen in the North of the city. New green and blue infrastructure will be introduced along the modernized way available also for pedestrians and cyclists. The project is developed along with the city policy towards environmental regeneration of the Emscher region (Ref. 1).

The Oriental Park of the City of Porto is an urban natural park designed by the landscape architect Sidónio Pardal. It will be one of the largest urban parks in the country and the second-largest in the city of Porto. This NBS focused on the transformation of a derelict, depressed urban area into a green space. The first part of the park was inaugurated in July 2010 and the municipality has plans to build it through several phases over the next decade until it reaches its project area. (1)

An old hippodrome will be transformed into a natural urban park. "The Metropole of Rouen has launched this reconversion project of in consultation with residents and associations. It is the Mutabilis group that has been chosen to carry out this transformation, the first work of which will begin in 2017. The project, called "Champ Libre", integrates all the components essential to urban life: a place of discovery, nature and innovative agriculture" (Ref. 6).