Transformation of previously derelict areas

On the derelict industrial plant in Brackwede, which was independent until 1973, a large leisure facility with an extensive range of leisure activities was planned. However, due to more recent findings, this direction was rejected and a natural green corridor was created with unique biotope areas that had developed over time from the abandoned bleaching ponds and meadows. The Luttertal is located in Bielefeld Quelle, south of the
The industrial plant in Brackwede was intentionally abandoned since 1973, due to the local municipality recently cancelled the project of the redevelopment of the area and kept it intact. Till now, a “natural green area developed with very interesting biotope areas, which had evolved over time” at the abandoned site.

Along the 'Green Belt' (Grünen Band) in Bielefeld, which connects several urban grave lands with a continuous path, the organisation of Transition Town Bielefeld created a community garden to replace the permaculture garden in Bleichstrasse. (8) Thanks to its location, apart from the food production, the garden increases the environmental quality of the site serving as a green transition between the grey areas and the city. This function is in line with the overarching mission of Transition Town Bielefeld to promote energy and cultural transition in the city through different initiatives. (7) The community garden initiative was started in 2013 and welcome citizens to take part in the maintenance, planting and other gardening work of the garden or simply to enjoy its beauty since its launch in 2015. The project has a bigger goal towards sustainable development of urban infrastructures and social equity (1,2).

Restructuring a public derelict land into few private vegetable and fruit gardens. The gardeners practice organic gardening making it more sustainable. This provides foods as well as increasing the soil fertility, and reduction of the soil erosion. This also creates some extra vegetable and fruit market in the city. 20 % of the food produced is donated to the food bank. The project is a community project which also helps to bring people together. Started in April 2012 (Ref 1,4). The project is one of the initiatives by the Greek municipalities allotting land to local citizens with the purpose of increasing food security for the underprivileged, educating the younger generation, and providing their citizens with a retreat from city life (Ref 3).

The City Council has passed an ambitious woodland plan designed to protect the municipality's groundwater.By planting woods in vulnerable areas where boreholes have been drilled for drinking water, the use of pesticides or other pollutants in the immediate area can be avoided. Aarhus residents will be ensured clean drinking water in 20 years even though the population is rising.(Ref. 2) New woodlands west of Aarhus will be a magnet for lovers of the open air, and secure clean drinking water for the city's population.(Ref. 1)

Since it's founding in 2005, the association "Ermekeilinitiative e. V." has been aiming at the transformation of the Ermekeil quarter, a former military base to a communal, generation-wide and intercultural space with diverse ecological and sustainable use. Since the Federal Office for Defense Administration moved out in 2013, the territory was released for interim use. Together with residents and communities, the association turned the territory into a lively, green and mixed neighbourhood with several initiatives taking place in parallel. The community garden project was one of them (1).
The interim use of the area ended in 2016, some of the buildings of the former military base have been sold on the real estate market. This resulted in the termination of most of the Association's initiatives in the area including the removal of the 100 raised beds of the community garden. Parts of the community garden was relocated to a different part of the quarter, however, since 2018 there is no information on the current working and management of the community garden (2,6).

Before the intervention, the dam was a derelict former industrial and recreational area. (Reference 6) It was transformed into a green recreational park of the southern part of Budapest. 40,000 square metres of grass was laid, 700 trees, 20,000 shrubs and 20,000 perennials were planted. (Reference 4) The park now is a home to a biodiverse population of wild birds. It is one of the few places of the city that have direct connection to the Danube, giving space for strolling, doing sport, playing and relaxing. In 2018, a large-scale development began next to the dam, with the aim of creating a new city center. This would make the park a place for leisure for much greater number of people, but may be detrimental to the ecosystem of the dam. (Reference 6)

Opened in 2019, the René-Dumont Park which runs adjacent to a railway is "a centerpiece of the urban composition of the Nouveau Saint-Roch neighborhood" in Montpellier. (Ref. 1 and 2). This north/south 1.2-1.3 ha vegetation corridor represents a major of the city's urban renewal plan and "allows a great articulation among existing habitats, infrastructures and a contemporary neighborhood" (Ref. 2). The large area is considered to be exceptional for dense urban centres (Ref. 2). "The Nouveau Saint-Roch district is an example of a social, generational and functional diversity" (Ref. 2).

In 2009, the city of Montpellier launched a large census project to valorize its abandoned areas. The study gives guidance on the management of abandoned areas in Montpellier, particularly in connection with environmental education and awareness objectives (Ref. 2). The strategy aims to preserve and promote the natural heritage of Montpellier; promote wastelands as reservoirs of biodiversity, tools for connecting natural spaces; protect and enhance the great green flows accompanying watercourses (biological links and privileged sites for fauna and flora); and develop a network of soft transport throughout the city based on the green network (rivers, agricultural, natural and park areas) (Ref. 4). "The spaces have been classified according to their context, their origin, their potential. This sometimes subjective typology presents a classification of the wasteland and makes it possible to take a particular look on each land. Surfaces of all shapes and sizes fall within this operational classification." Four Experimental projects include: Zenith Friche, Promenade of the Lironde, Pastourelle, Combemale" (Source: uploaded document).

The Anfield Regeneration project was founded in 2013 with the aim to improve the area and its neglected housing stocks. It was set up by the Liverpool council and the Liverpool Foot Club, along with developers Your Housing Group and Keepmoat. The activities include the development of new and refurbished housing, the development of a new public square including commercial and retail premises, a revitalised high street and the expansion of Anfield Stadium (Reference 6) . It also includes the creation of public spaces and selective garden extensions in the area following the demolition of a number of derelict homes (Reference 1).
The partnership has stated that more than 600 new homes have been built, with 600 existing properties refurbished. The project aims to create 1000 new homes and is scheduled to be completed in 2020 (Reference 6, 8).

The intervention was planned to revitalize and clean a derelict area close to the university hospital in Blato. Before the project was implemented, the area was an informal waste disposal site for the locals. The area was neglected for more than 30 years. Initially, Mayor Milan Bandić planned a large urban park with a thermal spa in the spot. The area was cleaned and some of the constructions had begun, but later it stopped due to some political hurdles (Ref 1, 2).
The first phase, cleaning the shrubs and waste from the area has been completed in 2015, but the use of the area has not been determined yet, therefore the project has not been completed (Ref 1).