The first archaeological remains of Crustumerium were found only at the beginning of the 1970s. Crustumerium was an ancient city in Lazio whose stories have been told by several Latin authors: Pliny the Elder, Livy, Plutarch and others. Its first settlement seems to date back to the 9th century BC, and it was situated along one of the roads connecting Veio with the Southern Lazio. Throughout its territory, the products extracted form the metal basins of Etruria were transported up to Campania. The strategic importance of its position led Rome to focus its conquers on this settlement until 500 BC, date in which Crustumerium gets definitely conquered by Rome.
In the Estate of Tor San Giovanni, at the main entrance of the Reserve, there is the opportunity to visit one of the several local agricultural firms. In this firm, breeding mainly sheep, there are also many other animals: cows, pigs, horses, goats, rabbits, hens, guinea hens, ducks and geese. Among them, the Sardinian Donkeys are the most interesting specimens. These animals, once used in agriculture for their obedience, patience, and resistance to toil, are an endangered species and are subject to safeguard measures.