Peratallada, whose name means “carved stone”, is one of the most special medieval settlements in the country, with a splendid castle formed by several buildings with a common courtyard. The categorical respect to the history of the place and the use of local materials are the starting point of a project which suggests the use of the existing water tank (and its three levels) as ball-and-socket joint to save a complex topography. This is the way to avoid a great change in the landscape environment.