Point location, which indicates where the NBS takes place

Santalaia is a high-end, multi-family residential building located in the heart of downtown Bogota, Colombia. Santalaia is often referred to as "the green heart of Bogota" and is seen as an icon of sustainability [1]. The 11-story building was completed in 2015 and all eleven floors are engulfed in many species of plant wildlife to encourage biodiversity. There are 115,000 native plants of 10 different species covering a total area of 3117 m² [2,3].
The plants included on the exterior of the building rely on a hydroponic system and provide a model of how to increase green zones in urban areas. A vertical garden of this size provides natural beauty in the middle of concrete Bogota while mitigating the carbon footprint of more than 700 people. An additional benefit of Santalaia’s vertical garden is that the plants create a “green carpet” that serve as insulation and reduce the use of air conditioners, an increasingly valuable contribution during times of rising temperatures due to climate change [5,6].

Thammasat Urban Rooftop Farm (TURF) is Asia's largest organic rooftop farm, which unites principles of modern landscape design with traditional agriculture of rice terraces, to transform wasted space into productive land. By mimicking traditional rice terraces, Thammasat University Urban Farming Green Roof has become an all-in-one solution–as a public green space, urban organic food source, water management system, energy house, and outdoor classroom–which serves as an adaptation model for anticipated climate impacts that can be implemented and developed across Thailand and Southeast Asia. Additionally, the mountain-shaped Thammasat University Green Roof utilizes its vast space as an infinite source of clean energy, not only in terms of organic food but also solar power for the community. [1, 2, 3]

Ensuring that Ivorians, from an early age, pay attention to the environment, it is one of the Ivorian government’s many environmental objectives. As such, in 2019, the Ministry of Water and Forests initiated a project in the Mamie Fêtai Highschool of the city of Bingerville. The initiative is part of a bigger project that aims at raising awareness and tries to engage the Ivorian school in the recovery of the forest cover of the country. Ivory Coast is a delicate case in West Africa, from a forestry point of view. Since 1960 the country lost more than 80 percent of its forests, mainly to cocoa production and agricultural practices (1,3)

The 'Step Garden' is a 14-tier green roof atop the Asian Cross Roads Over the Sea (ACROS) Fukuoka Prefectural International Hall in Fukuoka, Japan (Ref. 2). The Hall itself is a centre of international, cultural and information exchange, and sits amidst the Tenjin Central Park (Ref. 3). As the building displaced a plaza, the architect, Emilio Ambasz, created the “image of a mountain" through the design and installation of the roof terrace (Ref. 2), "want[ing] to give back to Fukuoka’s citizens all the land the building would subtract from the city" (Ref. 3). In combination with the Central Park, the rooftop garden is considered to be the only open green space in the city centre (Ref. 4), and since its inauguration in 1995, has been open to the public, accessible via two entrances on the park side of the building (Ref. 1).

Having been awarded the LEED Gold certification, the President Place building is considered the greenest building in the city. The building has been designed to create an exceptional balance between work, life and the environment. The 9th and 13th levels of the building have green roofs and terraces. President Place selected climate-tolerant plants that can survive on natural rainfall, and thus the green roof system does not require a permanent irrigation system. Effective practices were considered during the installation of the green roof, such as mulch for trees to conserve moisture, choosing plant species that can easily adapt to the site and need less irrigation. Trees have also been planted on the ground level. Additionally, the building is surrounded by permeable paving to help rainwater percolate easily. The aim was to create a visually appealing office building that leads the way in environmental, design-led construction in Saigon. [1, 2]

The green roof pilot project is part of eThekwini Municipality's Climate Protection Programme, initiated in 2004, it was focused initially on understanding the vulnerability of the city of Durban to the impacts of climate change. A strong emphasis has been placed on identifying climate change adaption projects that will improve the resilience of the city to future developmental, social and environmental challenges. Basically, the green roof pilot project is a response to the higher temperatures and increase in the frequency and severity of floods and droughts that are expected as a result of climate change. From an urban environment perspective, these changes will exacerbate the already high temperatures experienced as a result of the Urban Heat Island effect and the high levels of surface run-off and flooding that result from the hardening of permeable surfaces. (1,3)

In 2018, a new annexe building to the Parliament of Victoria was built to host the increased number of municipal employees. The new building is located in the heritage garden that surrounds the parliament precinct of which one hundred per cent of the footprint has been crowned with two new flourishing rooftop gardens that merge the building into its extraordinary landscape setting (1). The new garden is one of the biggest rooftop gardens in Melbourne and accommodates 300 mostly native plant species that characterise the Australian meadows with wildflowers, grasses and shrubs (2). During the construction of the annexe building and the landscaping of the rooftop garden and the connected sunken courtyard key elements of the heritage garden were protected as touchstones for example a Federal Oak planted in 1890, a Norfolk Island Pine and a camphor laurel ( 7). The garden encourages greater biodiversity within the dense urban context, provides thermal insulation to the new building and creates social spaces for events, announcements and contemplation (2).

The Porous Alley consists of a strip of porous asphalt in a public alley aimed at filtering stormwater and managing runoff in the affluent South End neighbourhood of Boston. Most of the neighbourhood around the NBS location is filled with land that once was tidal marshes, supported by wood pilings, and threatened by falling groundwater levels. The Porous Alley was designed and implemented as a demonstration project to test the feasibility of using porous asphalt to increase groundwater recharge and reduce flooding and water pollution. The increasing groundwater level has high importance in the area the NBS is located in as building foundations are at risk from low water levels. (1,2)

Henteleff Park is a 'passive park' located along the banks of the Red River and Normand Creek in Winnipeg where the rural character of a landscape that nurtured early Métis culture, Winnipeg’s budding market garden industry and the Henteleff family has been reserved (2). In the 1980s and '90s after being the city's tree nursery it was up for real estate development when "a group of volunteers from the nearby residential area, led by the Henteleff family, presented a convincing plan that showed the value and potential of the site as a public park. As a result of successful lobby efforts, the land was rezoned as a park in 2002 and named Henteleff Park after the original owners of the farm" (1 p21).
With its grasslands, riparian forests, Red River banks and the Normand Creek, the Park is home to a diverse plant and wildlife, providing refuge for songbirds, a spawning area for fishes and a serene sanctuary for community residents to enjoy a quiet respite from the bustle of the city life all around (2).

This project started as a grassroots movement by Hunter’s Bar Infant School (HBIS) in Sheffield when they were seeking to actively help to protect children from air pollution. HBIS led a fundraising campaign that, in collaboration with the University of Sheffield, provided the base to create a green barrier in their playground. The NBS is part of a bigger study called BREATHE that provides the science behind the project, which involves the design of the green barrier, the assessment of its impacts and a feasibility evaluation for installing green barriers in other schools in Sheffield and in Buenos Aires. (1)