In the parks and gardens, you can hear the water gushing. The knowledge with which the Arab culture was imbued, starting with the development of science and mathematics, also involved the reorganisation of the layout of Palermo. The city became an area where studies on water channelling systems, including the underground water channels known as quanāt, gave impetus to the construction of parks and suburban gardens enriched by the presence of surface pipelines, saie, fountains and water collection tanks.
