Yearly maintenance of green surfaces
On a yearly basis, the city of Zagreb, Zagrebački holding plants new trees and bushes to maintain Zagreb as a green city with 114 hectares of green spaces (Ref 2). Also includes maintenance of green surfaces, such as grass in public parks along with tram tracks and planting new trees and maintaining existing ones next to kindergartens and schools (Ref 2). Maintenance of city parks, lawns and tree lines includes cleaning, mowing and collecting grass and garbage from green areas, restoration of trampled lawns, maintenance and pruning of trees, shrubs and hedges, maintenance and care of seasonal and permanent flower beds, maintenance of paved and dune areas in parks and installation and maintenance of urban equipment in parks and children's playgrounds (Ref 1).
Las Cigarreras Sustainable Urban Development Project
The Alicante City Council will receive 11 million euros from the European FEDER sustainable growth program 2014-2020 to carry out this project, the Integrated Sustainable Urban Development Strategy of Alicante DUSI Las Cigarreras. This funding will allow the integral transformation of an area that extends between The Castles of Santa Bárbara and San Fernando.” (Ref. 1). The specific transformation includes the recovery and dynamization of an important urban area that includes four historical neighbourhoods and two of the most emblematic mountains of the city, surrounded by two castles and with extensive green areas and rehabilitation of the existing city from the social and environmental sustainability, facing new urban development (Ref. 2)
Green and Grand City
2017 Green and Grand City is part of Göteborg's 400th anniversary (in 2021), and plans are developed up to the anniversary on a yearly basis. In 2017, the focus was on a greener and grander Göteborg. The vision for 2021 includes three themes, water, building bridges (reduces divides between people) and open spaces. The anniversary efforts build on three elements of sustainability; social, ecological and economic. (Ref. 1)
Urban Farming
”Gothenburg is now greener and more beautiful. Urban farming is the name of the investment that Göteborgs Stads Fastighetskontor (The property office) makes to stimulate small-scale and residential/urban farming. The goal is to get new crops, crops in unconventional places, plants/farming that provide joy and help to spread knowledge and create contact between generations and people from different parts of the city and the world. But also to develop the already existing cultivation and colony areas.” (Ref. 1)
Kvillebäcken – First green district
"Kvillebäcken is the first urban district in Gothenburg built according to the new environmental demands. Traffic and buildings will be adapted to a more environmentally sustainable community, where no inhabitants will be dependent on transport by car. Housing and commercial buildings will meet strict demands on energy balance, indoor environment, healthy materials, protection from noise and moisture, greenery in the courtyards and surface water management. New environmental technology solutions will be used in the district, such as the efficient collection of household waste and covered bicycle parking. New solutions will also meet strict demands on economic and social sustainability." (Ref. 1)
Path along the banks of the Guadalquivir
Recovered section of gardens along the banks of the Guadalquavir river, from the Bridge del Cachorro to the Alamillo Park. The area was originally built up for the International Exposition of Sevilla of 1992 and it was abandoned after the event. The area has been recovered by the city and transformed into a park with a series of gardens and pedestrian walk ways along the river. (Ref 1-3) During the 16 years of closure, the flora kept on growing and was rehabilitated during the process of the intervention. The plan also sought to recover the historical gardens of La Cartuja and incorporate them into the garden network of the Paseo de la Ribera. (Ref 2,3)
Great-Granny's Garden at the Botanical Garden of Oslo University
The University's Botanical Garden is part of the National History Museum of Oslo and acts an important green space for both citizens and regional fauna. The Garden was founded in 1814 and is the oldest scientific garden in Norway, which through research, education and plant conservation seeks to increase public awareness of the importance of plant diversity. The Great-Granny's Garden is an important element in the Botanical Garden, aiming to preserve Norway’s horticultural heritage and prevent traditional fauna from disappearing, while encouraging sustainable use in future horticulture. The Garden also act as a sensory garden for people with dementia. (Ref.1,2)
Historical rain gardens at the Great Mosque of Cordoba
The rain gardens of the Great Mosque give an example of a sustainable urban drainage system built 1000 years ago (Ref.1,8,9). The Great Mosque is a world heritage site by UNESCO (Ref. 1); therefore the rain gardens are protected and will continue to provide a sustainable irrigation system needed for the arid climate of Andalusia (Ref. 8,9).
Rey Moro Orchard
The Huerto del Rey Moro is an urban community orchard/ garden beside the historic house Casa del Rey Moro. It is one of the only open green spaces in the downtown area of Sevilla where activities of environmental education, leisure and socializing are performed. (Ref 2) The Rey Moro orchard is cited as keeping true to the historic and cultural use of the area since it has been used as an orchard on and off over the past 500 years. (ref 2) Thanks to citizens themselves, as citizens acted to keep it a public and open space against a proposed legislation that would destroy it. (Ref 5)
The Royal National City Park
“The Royal National City Park, the world’s first national city park, was created in 1995 by the decision of the Swedish Parliament. The Park was established to safeguard and enhance the unique qualities of this area, containing outstanding natural qualities and heritage sites, ecologically important for the metropolitan area, and situated near and easily accessible from the central parts of Stockholm.” (Ref. 1)
One can experience a truly unique historical landscape, intertwined with parks, beautiful buildings, forests, open fields and beaches. In 2020, the park celebrates its 25 the year. (Ref. 12)
One can experience a truly unique historical landscape, intertwined with parks, beautiful buildings, forests, open fields and beaches. In 2020, the park celebrates its 25 the year. (Ref. 12)

