Urban greening policies and measures have recently shown a high potential impact on the design and reshaping of the built environment, especially in urban regeneration processes. This book provides insights on analytical methods, planning strategies and shared governance tools for successfully integrating Nature-Based Solutions (NBS) in the urban planning practice. The selected contributions present real-life application cases, in which the mainstreaming of NBS are investigated according to two main challenges: the planning and designing of physical and spatial integration of NBS in cities on one side, and the implementation of suitable shared governance models and co-creation pathways on the other.