The Horse Chestnut, a beautiful tree found in many city parks, is a plant all-rounder. Its name comes from Greek: in ancient times, in fact, the ground fruits were given to horses to cure them of coughs. In popular medicine, the chestnuts were used to treat haemorrhoids. And, once cooked, to prepare an excellent…glue. Just be careful not to eat them, because the presence of saponins makes them toxic.