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The Rohrschollen island, located near Strasbourg, is representative of a particular environment in Europe: the Rhine alluvial forests. These forests are known for the exuberance of their vegetation and their richness of species: it is a rare ecosystem both at the national and European level. These forests are regressing nowadays and as a result, the four major European rivers from the Alpine range (Rhine, Rhone, Danube, Po) have lost most of their riparian forests. The objective of the project is to restore a dynamic flood regime on the island of Rohrschollen that is modeled on the Rhine's hydrological rhythm (Ref. 1).

The Development of the Garden of the Schloessel project is part of the Natural Urban Park project undertaken by the City Council in consultation with the Strasbourg Urban Community (Ref. 3). The project aims to reduce the carbon footprint of the area by installing and redeveloping green spaces in the garden as well as providing the site with stormwater management infiltration (Ref. 1).

The project of the Park of Malaga was to rehabilitate the lateral spaces of the Paseo del Parque, the organization of the environment, the recovery of the flora and structure of the Park, as well to construct a solution for problems of mobility. (Ref. 1). Recovery of Vegetation of the park, its original layout, and its scientific character of garden Botanical and species acclimatization were central aims of the project (Ref 1).

The San Rafael Park is an urban park and commemoration site built over former communal graves containing more than 2000 bodies of victims of the Spanish Civil War and the Franquista regime. The large project has had 4 phases, three of which have been completed, including the building of a Historical Memory Pantheon to commemorate the victims in the communal graves exhumed from the grounds where the park now stands. (ref 1) In these phases are numerous reforestation and water preservation plans (ref 1-7) including the gardening of more than 4,000m² of green area with 104 shade trees, 8 palm trees and more than 400 units of shrubs, in addition to covering the rest of the surface with perennials and meadows (ref 3).

The rehabilitation of the main road Alameda Principal seeks to invert the previous distribution of use of space that saw 70% of it devoted to car usage and 30% to pedestrian use, after the intervention the situation should be 75% civilian and pedestrian space and 25% for cars. (Ref. 4,5) More public spaces, green areas, walks, bike lanes and leisure facilities will characterize this action, which also prioritizes highlighting the identity of this area of the city and value its architectural elements, patrimonial, wooded vault and cultural links. (Ref. 4)

On November 5, 2019, the Committee for Urban Development and Technology passed the building decision for the riverside park Austraße - Neckarterrassen. To the north of Münster, the Neckar has cut deeply into the shell limestone and describes a wide arc on the Prallufer. There is little space between the cliff and the river - that is what makes this place so special. This is where the Austraße riverside park is being built with the elements Freienstein water playground (element 1), Neckarterrassen and Tapach-Link (element 2) as well as Austraße, Neckarufer and Neckarstrand (element 3). The first component has already been implemented: children will find their favorite spot on the Freienstein water playground south of the Max-Eyth-Steg. Students from the Elise von König School in Münster contributed their ideas as part of a child participation program. With the second component and its sub-projects “Tapach-Link” and “Neckarterrassen”, there are beautiful prospects for Münster: Those who have overcome the relay to the Neckarterrassen can rest in the shade and let their eyes wander up and down the Neckar. The third component of the Austraße riverside park - in addition to the Freienstein water playground, Neckarterrassen and Tapach-Link - focuses on the banks: podiums and platforms are planned on the river to linger while the freighters transport their goods on the water. Insects, small crabs and small fish find optimal living conditions on the renatured bank zones with stones and diverse flora. (1, 7).

The winners of Smogathon 2016 suggested building a large green wall in the centre of Kraków. Based on the modern technologies the artificially placed wall made of metal and moss would clean local air, lower the temperature, retain water, increase biodiversity and serve as a decoration for the city centre [1,2]. The project was not completed due to lack of scientific data on its effectiveness and the weak price and outcomes balance; the city is still searching for more economical and practical solutions [6].

The project called “The Apiary of Kraków” includes several interrelated initiatives to establish beehives on the rooftops of various institutions in Cracow. The aim is to provide habitat for bees, and protect biodiversity, support urban pollination, increase social awareness on the topic. Urban honey is of better quality than honey produced in rural areas where pesticides are more common. The local administration-led initiative aims to promote Cracow as a pro-ecological city which soon will be selling its honey [1,2,3,4].

Landscape Park Neckar is a multi-place NBS intervention that is being realized along the banks of the river Neckar in 27 cities, including Stuttgart. Along the river axis, the free spaces between the dwelling buildings, industrial areas, and transport terminals are identified to be transformed into green areas, parks, and new recreational facilities. With this step-by-step approach, it succeeds in regenerating green areas for natural and social functions and helps drawing attention to the diverse benefits of Green Infrastructure. There are now eight master plans for the different landscape areas, which fit together like pieces of a puzzle to form the Stuttgart Region Landscape Park. Each sub-concept is tailored to the characteristic conditions. Since 2005 the Verband Region Stuttgart has been calling on cities and municipalities to submit project ideas. From this, the projects are selected in a competition in which the region pays up to 50 per cent of the costs. In this way, total investments in the Stuttgart Region Landscape Park of around 45 million euros have been triggered in recent years and around 200 projects have been co-financed by the region. The redevelopment of the landscape is in the ongoing phase. (ref. 1, 2, 7).

The Liège Expo 2017 Masterplan was developed for the city of Liège, as part of their bid to organize the International Expo of 2017. In this plan, the Expo was not just an exciting stand-alone event, but rather the start of a sustainable transformation and an ecofriendly future of the city. The proposed development on both banks of the River Maaswill aimed to create new access to the river and improve the quality of life and the sustainability of the city, all at the same time (Ref. 1). While Liege was not awarded the 2017 Expo, the decision was made by the City to continue the competitive dialogue procedure initiated with a view to developing the Coronmeuse site into an eco-district (Ref. 12). Construction was launched in 2020 (Ref. 14).