Castelgrande, Montebello and Sasso Corbaro will allow you to journey back into the past, to a time when dukes and confederates fought in shining armour. Walk along the battlements and through the little doors notched into the thick walls, visit secret rooms and imagine how life was once lived. This loop itinerary allows you to discover the three medieval castles, listed in the year 2000 as a World Heritage site. They were built by the dukes of Milan in the Fifteenth Century to stop the Confederates to the north advancing south. Indeed, Bellinzona has long represented a prime strategic location, at the crossing point of the alpine routes between North and South (Gotthard, Lukmanier, San Bernardino, Nufenen).