Østengen & Bergo AS is an award-winning Norwegian landscape architecture practice based in Oslo, founded in 1996 by Kari Bergo and Johan Østengen. The firm specialises in landscape architecture at multiple scales, from landscape analysis and urban development to the detailed design of public spaces, housing developments, schools, parks and infrastructure. Its approach is rooted in understanding the unique character of each site and translating it into sustainable, functional and distinctive landscapes that enhance biodiversity, encourage social interaction and strengthen neighbourhoods. Combining expertise in concept development, 3D and BIM modelling, technical design and construction documentation, the practice delivers projects across Norway with a strong emphasis on high-quality design, environmental sustainability and long-term usability.