The «non formal education» process refered to the adult population are presented in this work an in a particular way, these that efect the 3er age group. This non formal education has been essencialy concreted in three directions: «critical free acción» (P. Freiré); the «educational city» proyect (E. Faure) and finaly the andragoxical perspectiva (M. Knowles). In these concrete projections of the non formal education for adult the «educational city» and «healthy city» models are described. Both models suppose diferent control prospects. In a particular way the educational non formal actions that are developed in the «3er age classes» in Galicia Spain) are detailed.