Grass

As a consequence of the rehabilitation of a highway that connects Craiova to Bucuresti, the municipality of Craiova implemented ecological parking spaces in the areas that went alongside this road. It was a much-needed solution in a city that lacks in green spaces. The first experimental parking space was implemented in 2008. Most of the parking spaces are located near building blocks (1).

The Tineretului Park is a special vegetation and touristic area, a forest park stretched over an area of ​​over 60 hectares, on the left bank of the Jiu River. It was rehabilitated in 2009 by the municipality and it is the second-largest park in the city. Before its rehabilitation, it was seen as a dangerous area, high in petty crimes. Its rehabilitation was also much needed since Craiova is one of the Romanian cities with the lowest number of green spaces (1,2) .

The largest park that Craiova has (third in Europe and second in Romania), the Nicolae Romanescu park is a historical area which includes green space, a hippodrome, a lake and a zoo. In 2015 the park went into rehabilitation with money allocated by the EU (1).

The Aa promenade, created in 1950 to provide the citizens of Muenster with a green experience trail in the inner city, was redeveloped in the 90s with several planting measures on riverbanks, walls and in adjacent areas. Next to a brochure, a nature trail which combines the existing recreational with an educational component was created with 18 site-specific signposting points. They cover multiple benefits and ecological functions of urban green spaces, city trees and green facades/walls (microclimate regulation, air quality, CO2 capture), anthropogenic threats, unknown biodiversity hotspots and natural monuments (Ref. 1, 3 and 6).

The Green Ventilation Corridors network in Stuttgart, Germany is an implemented nature-based solution coupled with regulatory policies and incentives. Within this initiative, Green ventilation corridors were created to enable fresh air to sweep down from hills surrounding the city (4).

The Knowledge Mile Park initiative in Amsterdam aims to transform the long, busy and traffic-heavy street in downtown Amsterdam into an environment greener, more sustainable and more livable through the implementation on various Nature-based Solutions (9). Smaller projects include the creation and maintenance of pocket parks, green walls and facades, green roofs and living labs. The idea of the initiative came from the Knowledge Mile Community that aims at making Amsterdam more green, clean and smart by means of innovative solutions regarding air quality, climate change resilience, biodiversity and social cohesion. (1) municipality of Amsterdam and the business investment zone BIZ Knowledge Mile are working together with partners on the realization of the project (9)
The project is still ongoing, although parts of the Knowledge Mile Park are already created in 2016 including one living lab, two green roofs, a green canopy and a pocket park and other parts are planned such as the smart green wall (1)

The indoor green wall installed at the University of Natural Sciences in Lublin. Apart from its decorative and aesthetical functions, the wall will serve educational and research purposes. The wall consists entirely of moss and does not require watering. It will be monitored regularly to analyse the impact of light conditions for proper growth and development of plants in these type of installations [1,2].

The Park Killesberg serves as the green centre of the newly constructed district in Stuttgart and continues the long history of the area as a garden show site with a contemporary expression of landscape architecture and as a model for interconnected green spaces. The design is the result of a collaborative process with the local authorities, citizens and neighbours (1).

Greened-over urban railway tracks (grass tracks) is a city-wide program in Stuttgart which assumes the construction of tram lines with grassed-over tracks. This applies not only to planning and construction but also long-term maintenance (ref 1).

A large urban park in Lublin was built to commemorate John Paul II’s visit to Poland in 1987. The project ensured the utmost possible preservation of the natural terrain so that it forms a harmonious whole with the surrounding landscape. The park serves as a green recreational area for the citizens with its open-air sports facilities and a small amphitheatre for local festivities and extracurricular activities [1].