What has been generally happening over the last decade is basically that people are claiming new and much more “open” and useful public spaces for leisure activities. Spontaneous episodes of appropriation and informal uses repeat over and over within abandoned and useless public spaces, former industrial sites, neglected welfare facilities, urban voids... According to this phenomenon, new trends based on Self-made or Hand-made urbanism have occurred: people get organized autonomously in order to provide what they need and what they are looking for in everyday life in terms of facilities and performances of the urban public space, trying to state and support new trends and ways of sociability and public life. How could it be possible to free emergent and innovative better utilizations of contemporary public spaces within the city and to restart enjoying public life? What are architects and urban planners expected to do?