Geometry, Shape, and Typological Adaptation of Lighthouses Within the Italian Environment

The chapter starts from the analysis of several buildings designed as lighthouses for the Italian network or adapted to host lights from existing heritage. The graphic study of shapes, internal staircases, and also architecture creates an important reference for morphogenesis studies. The chapter presents the evolution that lighthouses have undergone during the centuries in order to assume geometrical layouts; while the outward appearance of the tower has always been designed according to their visibility during the day hours, shape and construction’s technology evolved through geometrical forms which would resist to the conditions of exposure and to critical state of the site. The interior staircase represents the living core starting from stone design and cutting, according to the stereotomic design. The chapter presents a parallel of cases, highlighting geometric principles, shapes, and solutions according to architectural typology.