People living together “on purpose”. Eco-villages etc etc, trying to show that Another World is Possible.
Wikipedia: An intentional community is a planned residential community designed from the start to have a high degree of social cohesion and teamwork. The members of an intentional community typically hold a common social, political, religious, or spiritual vision and often follow an alternative lifestyle. They typically share responsibilities and resources. Intentional communities include collective households, cohousing communities, ecovillages, monasteries, communes, survivalist retreats, kibbutzim, ashrams, and housing cooperatives. New members of an intentional community are generally selected by the community’s existing membership, rather than by real-estate agents or land owners (if the land is not owned collectively by the community).
See also Prefigurative politics