Mixed, not single-purpose, land use, is the current city planning paradigm. Biospheres have been needed in urban areas for ecological sustainability and diversity, and for cultural and social diversity. Securing green spaces for non-human biospheres usually conflicts with human land use, but food cultivation creates green spaces for, and managed by, people. They are a kind of biosphere. Farm lots, which were always divided from the city, are being inserted in urban development projects or parks in Japan recently. The author investigated the historical relation between farm lands and cities, and the recent projects, and based on the results, shows that farming spaces in an urban area may give the urban environment new diversity, produce a new concept in practical land use planning and community improvement, and create a new urbanscape concept. These changes in consciousness will make urban planning and design more diverse and sustainable with a biosphere and with greater well-being.