Grass

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]

Initially the park was created in 1903 as a summer residence for the royal family and had a no-visitor’s policy. For over 40 years the park collected 821 trees, shrub and, grass species from all over the world on less than 100 ha. After the estate was given back to the successors of Tsar Boris III, they partially donated the park to Sofia municipality and in 2013 the park-museum ‘Vrana’ was opened for visitors. Due to its rare species, well-preserved wilderness and historical significance, the park enjoys great interest from tourists as well as scientists as a biodiversity hotspot. (Ref 1)

A private investment project that aimed to create a new building complex in the Findorff district of Bremen and build two large residential buildings "Münchner Bogen" and "Findorffer Tor" with green roofs on top. The green roofing of the buildings was influenced by the local actors - the alliance "Green Bremen" and the advisory board of the Findorff Council. The initiative aimed to contribute to sustainable urban development by the positive impact on biodiversity, rainwater retention, improved local air quality and provision of natural thermoregulation for the buildings (Ref. 1, 2, 3).

Mercedes-Benz helps in the Reforestation of the Park of the Pena, in Sintra: "As part of its social responsibility actions, and as a socially responsible company and involved in its community, the Daimler Group in Portugal decided to intervene and help in the reforestation of the Pena Park in Sintra after it was flogged in 2013 and 2015 By violent storms that caused the fall of more than 2000 trees." (ref 1)

The renaturalization of the water canal Hirtenbach project was part of the larger city-wide initiative that aimed at the naturalization of different parts of the city's drainage system including small trenches and streams. The initiative aimed to decrease the risk of floods, improve the water quality, protect the local flora and fauna from the pollution, as well as provide for an additional recreational area for the citizens. (Reference 1)
In 2000, natural remodelling or the creation of near-natural structures began in sections. A 20, 000 m3 retention basin was also built. These actions improved flood protection and ecology of the area, and it provided local recreation opportunities. However, a study conducted in 2014 revealed that the restoration measures brought positive changes, but it was not enough to achieve a “good water status” defined by the European Water Framework Directive. Intensive care from silting and lush plant growth, wide margins, and the reduction of nutrients coming from the drainage and agriculture, need to be addressed. (Reference 2)
A new landscape is expected to be created when the alder trees grow. Waterbirds and waders, as well as insects like dragonflies, bees, butterflies and crickets, have been observed in the area (Reference 3).
The large drainage system of the city of Hannover includes many small trenches and streams with a total length of 152 kilometres. The intervention in Hirtenbach involved renaturalization worked on the total length of approximately 10,5 km (of which 3,3 km in the urban area). (Reference 2)

Green roofs were created on vehicles in the Spanish cities of Barcelona, Girona, Córdoba, Valencia. This initiative is based on the project of Marc Grañén, who developed PhytoKinetic a project for the development of moving gardens. (ref 1) The city of Palma de Mallorca was also considering its introduction as a measure of sustainability. (ref 1) The intervention, however, remained in the pilot stage (ref 1 and 4).

The project "Sustainable Support Program for Greening Buildings and Minimizing the use of space using the example of Hanover" was established jointly by BUND (Bund für Umwelt und Naturschutz Deutschland) and the state capital of Hanover. The goal of the project is to transform as many barren house walls and dull grey roofs and asphalted areas into green oases throughout the city. Since May 2013, all house and landowners, housing associations and building communities have been able to apply to the BUND for a subsidy for green roofs and facades. On 2017, the project was expanded to include unsealing of areas like inner courtyards, driveways, etc, thus creating new green areas. Advice on the correct greening measures and on professional unsealing have been also offered by BUND.
The project is funded by the state capital of Hanover, the German Federal Environmental Foundation (DBU), the Sparkasse Hannover and by proKlima. The "Green Hanover" funding program will end on December 31, 2020. (Reference 1)

“The Sintra Parks concluded the project of recovery of the English Garden, in the Park of Pena, that aimed to stop the advanced state of degradation of this area and to solve situations that represented a risk to the mobility and safety of the visitors.” (ref 1)
The NBS includes planting trees to regrow the tree cover of the area. (ref 1)

The project is a close-to-nature maintenance concept that combines the diverse usage requirements in public green spaces and the promotion of biological diversity through near-natural care. (Reference 1) It aims to promote biodiversity in the area through the plantings of local trees, installation of deadwood stacks, dry stone walls and boulders, which will help in the increased interconnectedness of the green areas and provide for structured habitat for the local species. The initiative also involves development of ecological standards for the handling of green spaces in the country, such as natural care practices that will protect local biodiversity (e.g. adapted mowing regime for lawns, flower meadows). (Reference 1, 2)
The "Urban green - species-rich and diverse" project is a cooperation project of the alliance "Municipalities for Biological Diversity eV" (Alliance) and the German Environmental Aid eV and with the participation of the five partner municipalities Frankfurt am Main, Hanover, Wernigerode, Kirchhain and Neu- Response. The project is funded in the Federal Biodiversity Program by the Federal Agency for Nature Conservation with funds from the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety. The experiences and results of the pilot project are further incorporated into the maintenance requirements for public green spaces in the urban area in other municipalities (Reference 1, 7).

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].