These waterfalls can be a fun side trip along the route. A spectacular natural show, the falls are actually the work of man. The Roman Consul Curio Dentato oversaw their construction in 271 B.C. to drain the Reatina plain, building a canal more than two kilometers long leading to the cliff at Marmore. A visit here will take at least three hours, and you must purchase a ticket.
Source: “La via di Francesco” – Edizioni San Paolo S.r.l.