Water management (SDG 6)

With the decline in industrial use, the grey harbour landscape of Frankfurt am Main became a habitat for rare plants. In 1986, the city council ordered transformation of the former industrial area into a public green space between the Main and the new residential area in the Ostend. The bright, spacious park with 2.1 ha surface was finished in 2000 (1) now welcoming locals for recreation and exercise while it also hosts a cultural summer festival and gives a home for local wall and fence lizards (1).

In the context of significant cuts to Newcastle City Council's budget, the issue of how best to maintain the green space in the city integrated into, and surrounds, social housing has emerged. A proposal to allow, or promote, the re-wilding of these spaces (e.g. changing turfed areas to wildflower gardens) was discussed in March 2017. The key driver appeared to be the potential to reduce the costs incurred by the council in the maintenance of green spaces around social housing. (1)
During a Naturvation project meeting in March 2017, the potential for contestation around this proposal was discussed and seemed to be considerable (e.g. re-wilded green space might not be considered aesthetically pleasing by residents and might not provide preferred functions such as space to play sports).

The vertical gardens were installed on a property whose two street-facing facades are almost entirely covered with layered greenery. The building is a mini-lung and an example of sustainability for the city, keeping the principles of a living habitat and a relationship with the outside, assuming a revitalizing urban role. Its walls are completely covered with vegetation, creating a vertical garden, with around 4500 plants. (ref.3, 1)The architect who designed the property was originally commissioned to transform an old building but serious structural problems meant the building had to be demolished, and with the chance to start from scratch, considerations for a more radical design began. (1)

In September 2011, a new eco-friendly student village ‘The Green’ opened to students at the University of Bradford. The new eco-village "The Green" has been designed to incorporate a range of features to enable students to live in a more sustainable way. It is part of a broader sustainability initiative by the University of Bradford called 'ecoversity' and its development is clustered around a pond, which is a part of a sustainable urban drainage system (SUDs). The Urban Pond/biodiversity pond – at The Green increases the biodiversity of the site. The site has been designed and landscaped with nature in mind, consisting of grassed areas, a wildflower border, shrubberies and native trees. (ref 3) The £30.4million development was the first multi-residential building in the UK - and one of only 15 buildings worldwide (ref 7).

The intervention was supposed to be implemented by the project group "Green Facades" consisting of the urban initiative "SchwarmFarm", the research project Quartier Zukunft and citizen volunteers. Greening facades in the Oststadt district of Karlsruhe with hops (climbing plant) to contribute to the cooling of the urban microclimate was their primary goal. Additionally, the harvested hops were envisioned to be used by local breweries for brewing (Ref. 1) Although the project group dedicated to the project was cancelled, there are plans to continue the project in private. (Ref. 2)
The leaders of the project have cancelled it, but it may still be implemented privately in a different form. (Ref. 2)

The project area comprises the morphological floodplain of the Rhine to the north and south of the city of Karlsruhe and sections of the river Alb, covering an area of about 7.665 hectares in total. Alongside Karlsruhe, five smaller communities in the neighbourhood contribute to the project as partners. Due to the channelling of the Rhine, the construction of dykes and the isolation of river channels, the area has lost its natural floodplains and precious habitats and became more vulnerable to flooding. Major objectives of the project are the re-introduction of natural floodplains and the enhancement of natural habitats for local flora and fauna. (Ref. 7). The project included an exceptionally wide range of measures including species protection measures, the complete desludging of parts of the Rhine, the re-establishment of softwood and hardwood forests typical of the floodplain, the construction of bridges, the natural remodelling of the entire river Trench systems and the creation of new bodies of water. (Ref. 9) The project also provides environmental education, informing the public about activities and encouraging their participation (Ref. 7)

Vine Court is a student residential complex located at the heart of the University’s city campus. It is equipped with both green and brown roofs, providing environmentally friendly habitats for local flora and fauna, utilizing local plant mixes and building material rubble from the excavated site. (Reference 2). It is at the forefront of sustainable residential development in the UK higher education sector and it was built to a high standard of sustainable design and energy performance. In addition to the eco-technologies incorporated into the structure, the brickwork includes built-in nest boxes for swifts and bats. It has been awarded a design stage BREEAM Excellent certification (Reference 1).

The Mab Lane Community Woodland was planted on a former playing field at Mab lane and Croxdale Road West in Liverpool. It is a part of the larger Mersey Forest initiative which has been increasing the amount of woodland and green spaces across Cheshire and Merseyside since 1991.
The new woodland which has a network of native trees, wildflower meadows a community orchard as well as seasonal wetland areas and footpaths, was officially opened by the local community in 2010. It also includes new pathways for walkers and cyclists and areas for family picnics (Ref. 2, 10). Mab Lane Community Woodland is a partnership project involving the Forestry Commission, Northwest Development Agency, Mersey Forest, Big Lottery, Riverside Group, Liverpool City Council and the Local Community (Ref. 10).

Bryggen, the old wharf of Bergen, is a reminder of the town’s importance as part of the Hanseatic League’s trading empire from the 14th to the mid-16th century and is on UNESCO's list of the world's cultural heritage. For about 30 years, large amounts of groundwater leaked, threatening the survival of the ancient site. In order to address this, sustainable water treatment and climate adaptation measures (involving the largest rain garden of Norway, swales etc.) at Bryggen were used to restore the water balance at Bryggen. (Ref. 1)

"Nancy Grand Coeur" is the name of an urban renewal planning project in Nancy, which included several blue and green interventions. This area of Nancy received in 2009 the "EcoQuartier" (Eco-District) French label even though the renewal planning works started later, and are still ongoing. "Completely remodeling this district to make it an engaging "facade", adapted to the lifestyles of the time and to the evolutions of modern town planning (diversity of activities, fluidity of travel, sustainable development ...): that is all aims of the Nancy Grand Coeur operation" (Ref. 3).