The chapter considers small urban gardens as a means of regenerating fragile, abandoned or disused interstitial areas of the city. Tracing the history of the contemporary garden, and in particular, the American pocket parks, the French "jardin de poche" and the participatory experiences of European urban gardens, the urban garden is recognised as having the interior, inclusive and domestic qualities of an "open-air room". The chapter is included in the Book Series "ii inclusive interiors" with International Scientific Committee and peer-review procedure.