Biodiversity has become ubiquitous in project descriptions as yet another mark of the design's environmental accomplishments. The increasing focus on sustainability, the standard inspired by the UN Sustainable Development Goals, prompts a deeper understanding of what biodiversity in urban environments means and how can architecture and urban design actively contribute to it. With species extinction rates soaring and urbanization over natural land continuing, cities become an essential factor in sustaining biodiversity, and the following explores how the built environment can foster multi-species habitats.
