Architecture plays a pivotal role in reversing this trend. One of the most effective yet underutilized interventions is the implementation of green roofs. The building’s fifth façade — the rooftop — represents a potential ecological asset, capable of being transformed into blooming, biodiverse habitats. These elevated landscapes act as critical “rest stations” for pollinators moving through fragmented urban environments.
By integrating green roofs into both new and existing structures, architects can provide essential food sources, shelter and microhabitats where urban nature would otherwise be absent. This approach is relevant across building typologies: residential, commercial, cultural and mixed-use developments alike.
At the heart of Oslo, the blue-green roof of Vega Scene demonstrates the tangible impact of thoughtful ecological design. Functioning as a living ecosystem, this roof supports more than 130 documented species, according to a comprehensive report by Asplan Viak and NIBIO. The project highlights how blue-green infrastructure can enhance biodiversity, contribute to ecological connectivity and redefine how urban surfaces are utilized. See also “The Roof That Will Change the Future of the Construction Industry” – Protan reference project
Supporting insect populations does not require large land areas — only smarter use of the ones we already occupy. By transforming rooftops into flowering meadows and functional green roofs, architects and planners can directly contribute to ecological resilience. These interventions provide not only environmental benefits but also add value to buildings through improved stormwater management, thermal regulation and enhanced urban quality.
Green roofs are more than aesthetic features; they are strategic tools for restoring biodiversity in the built environment. Through considered design, the architecture profession can play a decisive role in ensuring that urban ecosystems remain vibrant, functional and alive.
A single bumblebee requires nectar every thirty minutes to maintain the energy needed for pollination
A prize-winning cinema and concert hall in downtown Oslo, situated in a densly populated area. It has a roof that combines the aesthetics of a green roof with Protan BlueProof water attenuation system - a modern BlueGreen roof.
