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The Rákos-patak Green Corridor is a large-scale development project aimed at revitalizing the environment of the Rákos Stream on a 23 kilometre long path from it's areas in the outskirts of Budapest to the city center. The most important element of the development project is the planned bicycle lane, which would connect the already existing bicycle lanes along the stream into a full 23 kilometre one. In some areas of the planned corridor, other developments will happen with the goal of preserving and restoring habitats which originally existed in the area before it was first regulated. Near the outer areas of the stream, afforestation will also take place. (Reference 9) The area of the stream is currently underdeveloped. According to the plans, the new green corridor could help decrease urban stress.

"Flowers in the city' is a small project in the northern district of Szczecin to plant multi-species flowers in the green belt between two big city roads. The preparation of the meadow consists of removing the layer of turf and planting the corresponding species of flowers in different colours in different periods of the year so that the flower carpet flourishes for most of the vegetation season. The justification for the project highlights its esthetical effects, its role in serving as a food area for pollinators as well as a cost reduction for the lawn care units due to less annual mowing [1].

This NBS site is part of the Bratislava Zelenaj Project. This particular NBS involves the creation of vegetation on buildings as a means to mitigate the effects of climate change in cities due to urban overheating caused by global warming. It targets the residents of the Archa House of Seniors (Domove seniorov Archa) in Bratislava as part of the citywide project “Bratislava is preparing for climate change” with the aim of protecting and promoting the welfare of the city’s vulnerable citizens from climate change effects. The roof's main function is buffering the discharge of excess rainwater. (10)

El Paseo de Canalejas is "an alley of trees inside the city tracing a central green corridor which exhibits its old ficus whose shades provide a pleasant refuge to the visitors during the hottest days of the year. Those ficus trees are considered as natural heritage." (Ref. 1). "In order to protect the Monumental Arboreal Heritage, Alicante City Council has worked on the elaboration of a Catalog of Unique and Monumental Trees of Local Interest that reflects the inventory of this heritage and provides these specimens with protective measures" (Ref. 3).

“Xarxa de Sendes Urbanes de Alacant(Catalan)/Red de senderos urbanos (Spanish)” (Red of Urban Trails) is a network project developed by the city council consisting of urban trails classified into three types: environmental or natural trails, cultural or heritage trails and city trails, the latter as network connectors. The NBS focus on the first type (environmental and natural trails). (Ref 1) With the implementation of interconnected trails system and signage, the trails offer walks, educative explanation on the different species found in the area and provide leisure, relaxing and physical (running, hiking) opportunities to visitors and citizens. (Ref 2)

The greening of the Bega channel is a project which dates from 2008 and which aims at cleaning and revitalizing the channel on a distance of 44 km, in order to improve water quality, increase economic activities related with the river, and avoid future floods of the area. Since the channel has not been revitalized from 1945, the 2008 project is seen as an important step in improving not only the life quality of the Timisoara's inhabitants but also a major step in including environmental issues on the official agenda of the municipality. (1)

The Botanical Park is originally a garden which went through a modernization and rearrangement process in 2008. The park covers an area of 8.41 hectares and has a varied flora which is of Romania and also of various areas of the world which have a similar climate to the country. The purpose of the rearrangement was to maintain the area for scientific endeavours and to educate the public with respect to the importance of the environment. The municipality added this area to the 13th existing parks of Timisoara, which are part of the green belt of the city. (1)

Bastion Theresia Timisoara was built as a defensive perimeter for the Romanian town of Timisoara and has languished for decades in the center of the city. The bastion was rehabilitated and it incorporates green spaces and a community center. The old fortress' location in the middle of town makes it a natural hub for transportation and assembly, and the extensive green roof incorporates it into the city's urban green belt. (1)

The Port of Alicante is finalizing the installation of a new environmental barrier at Pier 17, where bulk unloading is carried out, based on a water atomization method that allows dust particles to fall to the ground of the port area and not arrive by air to the city. (Ref 11) This initiative comprises activities to reduce pollution in the port, such as a vegetable barrier against the air pollution produced by the dust during the unloading of bulk materials, supplied by an irrigation system that recovers non-drinkable water from a nearby plant. It includes the extension of the Parque del Mar, to recover historical points for tourism and the funding of a research project on air pollution (Ref. 12). “This measure is integrated within the Plan of Urban Integration of the Port of Alicante, improving the landscape impact and the port-city boundary zones from the southern access of the urban environment, along with the “Parque del Mar”, to the west zone with the installation of vegetal screens in the inner zone of the port, contributing to an important particle retention and CO2 reduction.” (Ref. 1). Inside the park, which can be traversed through paths, there is a small ornamental lake with rockery and it has children's games and petanque courts, gymnastics courts and recreational areas. The green corridor has been created with the creation of artificial mounds, for which 65,000 cubic meters of earth have been necessary, which act as a vegetal screen and visually and acoustically isolate the port facilities of the city. (Ref 7)

Ecological parks are parks that reduce stormwater runoff and pollutant emissions. It refers to a number of techniques applied at the same time to reduce the total impervious surface of a parking space, the decrease in the surface temperature and maintain a green island in crowded areas. In Timisoara, until the date of this completed intervention (2009), there were located 11 ecological parking spaces, placed throughout the city, most of them near building blocks in former industrial quarters (3)