Observation of the outdoor spaces crossed by railways brings out two particularly important landscape conditions which should be considered as planning questions. The fi rst is the construction of unsolved outdoor spaces on the margins, below and between newly constructed infrastructures or infrastructures being expanded. They are often inaccessible spaces fi lled with vegetation and fencing, either abandoned or in temporary use, and, more rarely, residual urban areas. The second is the re-use of abandoned railway structures as bicycle tourist routes, capable of giving life to a completely new relationship with the land crossed and with the perception of it and of reconfi guring the relationship between front and back and between structure and its use. In both cases the object is a landscape close to the infrastructure, its margins, the space between it and what lies beside it.
Keywords: Paesaggio, infrastrutture, ferrovie dismesse