Vacant space model

The Stavros Niarchos Foundation Cultural Center (SNFCC) is a project finalised in 2016 and “handed over” through a public/private partnership scheme, from the foundation/donor to the Greek state. The site hosts the National Library of Greece and the Greek National Opera in a 170,000 sq m landscaped park. The SNFCC's objective is to restore Greece's image and become a global role model of environmental sustainability. The project is committed to a range of educational and cultural activities, which have been provided for free. It also claims flood-regulating functions, air quality improvement impacts and shade provision, among others. [1]

Initiated by the City Administration, NGOs and citizen groups, public funds have in recent years been used alongside partnerships with local businesses, landowners and citizen initiatives to invigorate the East Quarter. This initiative was proposed through the redesign, extension and new development of parks, greening and communal use of vacant plots, the establishment of new urban forests, the setting up of new communal gardens, and the planning and partial implementation of a green corridor for cyclists and pedestrians.
Within this large project, three NBS areas actively contributed to the improvement of the Quarter: Querbeet, Bunte Gärten and Parkbogen Ost (1).
Querbeet is a community garden in the Eastern district of Leipzig, formed in 2012. The garden is lead by democratic self-governance principles where the focus is on shared space, with a focus on enhancing cultural interactions and encouraging active citizenship (1). Since 2017, the plot of the garden has reduced, however, the non-profit organisation formed two new gardens: a community garden and a school garden where environmental education the main activity (2)
Bunten Garten (Colorful Garden) is a community garden and registered refugee aid association that aims to bring residents and refugees together (3) The garden was revived in 2015, and since offers opportunities for recreation, wellbeing and informal support to refugee families (1).
Parkbogen Ost is a scheme focusing on developing unused railway tracks as an arch-shaped, green mobility corridor running along the perimeters of much of Leipzig’s East Quarter and connecting the quarter’s green spaces and providing easier access, by foot or bike, to the city centre as well as to surrounding areas. (1, 4)

A project of the local government developed with EU and federal funds that aimed at the development of the green and beach area in the course of the refurbishment of the flood protection system. The initiative sought to provide a model project for urban flood protection, which can showcase that flood protection measures do not require a separation between city and water and new recreational spaces at the water and shore can be created instead. The project involves redevelopment of the shore area, enlargement of the public space at the shore with additional sand deposit and greenery planting (Ref. 1, 2). The bank area with a beach and recreational facilities opened in May 2019 (Ref. 5).

A pilot educational garden was created by Foundation Zaedno in Sofia in 2011 in the city kindergarten Slaveyche. The initiative was carried out with the financial support of Charles Stewart Mott Foundation and volunteers. The aims of the garden were to turn a derelict site into an attractive place for learning about and practicing gardening, playing games, learning about healthy nutrition, conservation, and promoting the creation of other Delicious Bio-Gardens. The garden has herbs, vegetables, and a rainwater harvesting system. Events connected to this initiative were taking place till 2013-14 (Ref. 1; Ref. 2; Ref. 4)

The Sea's Corridor is a project that created green spaces with good quality that act as green belts of the city while serving as a support for the sustainable and not motorized means of transport. It was part of a project Plan called "Plan E" of the Municipality of Palma (Ref 1). The project was completed and in 2020 there are plans to do some renovations. They want to join the Sea's Corridor to Platja de Palma, as well as create new green spaces with a wider link with the ocean (Ref 5).

The project takes the form of a proposal for greenways of transport in the city to integrate transport infrastructure into the environment and insular landscape. The Park Vias would include communication channels that integrate into the natural environment, taking advantage of the environmental aspects to enhance the attractiveness of the greenways (ref 1). There are three greenways that were proposed, one which was made on an unfinished previous train railway (ref 1) from Manacor to Artà (Ref 6). This greenway was constructed with several social inclusion elements, there is no information about the other four (Ref 1).

The intervention includes two elements, part of the project aims to create a park and then a green corridor that unites that park with the city. This last corridor project was then planned as a rehabilitation and development project in three phases along an urban transitway. It aims to be recovered as a public space for citizens to improve the urban sustainability of Palma. Aside from the infrastructural development the intervention also included tree planting and green cover maintenance (ref 1). The work on this development began, but it was unfinished.
After public protests (Ref 11 ), in 2019, there was another phase proposed for this project, to retake this unfinished initiative and make a long corridor from the Parc de Ses Estacions to the Son Forteza District. This part of the project was on the planning phase due to the complexity of urban planning change as well as the costs of this initiative. There has been no development of this new proposal (Ref 10).

The NBS constitutes the annual planting of new trees, bushes, perennials, vines and flowers across Bialystok. The initiative is designed and implemented by City Hall and aims at improving the image of the urban area, and to provide a pleasant environment for the residents and tourists [1].

Ametzola is a neighborhood of Bilbao District 7 located on the left bank of the Bilbao estuary. In 2005 the construction of a park began since the neighborhood was seen as being alienated from other quarters of Bilbao and solicited a regeneration and integration into the urban life of the city. (Ref 1)

Extending from Kalasadam to the Noblessner quarter, the beta-promenade is a simple footpath along the seaside (from the fish market of the Fishing Harbor to the port town of Noblessner), created by removing fences, opening up gates and fortifying the shore. (ref 1) It is a project for public space creation in Tallinn Seaside by Linnalabor, where the seafront area is heightened in the public interest (Ref 2)
The beta promenade was made by filling an old, impassable landfill on a sometimes bumpy and fenced-in, but sea-view and spacious footpath, opening the old gate of the Patarei Fortress wall and marking the nearly two-kilometre shore route (ref. 1).