Nested Walls can bring us closer to nature, design and people. The project is intersecting street art, architecture, product design, urban ecology and community development. The aim is to enhance urban biodiversity, the population of birds and insects by creating natural habitats – “apartments” – for birds on blind walls in dense urban areas. It is an integral solution including green measures. These birdhouses installed on naked walls create a nature oriented, aesthetically pleasing street art that raises awareness about the decline of urban wildlife and the issue of climate change. Nested Walls hold the potential to create inspirational pilot projects in dense urban areas and beyond.