This circular route leads to the discovery of the Bellinzona Fortress, a UNESCO World Heritage Site since 2000. The defences were erected by the Dukes of Milan in the 15th century to prevent the Swiss Confederates from advancing southwards. Bellinzona was, in fact, in a strategic position at the crossroads of the alpine passes between north and south (St. Gotthard, Lukmanier, San Bernardino, Nufenen).

Start from Viale Portone and walk on the bulwark to reach Castel Grande with its two towers (Torre Nera and Torre Bianca), an artistic-historical museum, a temporary exhibition space and a restaurant. There are two options for getting to the town centre: use the lift down to Piazza del Sole and then turn onto Via Codeborgo to reach Piazza Collegiata; or, walk down the cobblestone steps from Castel Grande to Piazza Collegiata.

Follow the narrow alley next to the Collegiata Church to reach Montebello Castle, located on the opposite hill.

After visiting Montebello Castle, follow Via Artore for a short stretch of road and then cross a stream to Via Piumerino. Climb a steep flight of steps to the village of Artore. Pass in front of the Church of San Sebastiano, then pass the village wash-house and follow a cobbled path to the asphalt road Via alla Predella. Continue on the right, until Grotto dei Pacifici, then further on to the splendid fortress of Sasso Corbaro. From this height, there is an impressive view of the town and the Magadino Plain as far as Lake Maggiore. From the castle, exit through a small door in the wall and continue the descent towards Montebello Castle. Just before the castle’s keep, the gated passageway on the left leads back to the starting point in Bellinzona's historic Old Town.