Built in medieval times, with evidence of its presence from 1276, the Castello della Tourusela was built above the small village of Vernante to watch over the road leading to Colle di Tenda. A refuge for armies and brigands over the centuries, the hexagonal tower and the perimeter walls are all that remain of the castle today. From here, visitors can admire a splendid panorama of the town and the surrounding mountains.

The castle survived in its original structure until the mid-twentieth century, as evidenced by several postcards of the time depicting the 15-metre tall tower. Despite its important history, the current site of the Tourusela presents significant differences from the original structure of the building. 

In ancient times, the tower had a hexagonal structure that included five or six floors. The entrance was probably raised from the ground and could be accessed via a staircase that could be removed in case of danger. A small prison is presumed to have occupied the ground floor.

However, these elements are impossible to identify today, since the ground has been raised about two metres above the original level, hiding a good part of the base of the ancient structure and transforming the tops of the walls into a balcony with a parapet. The castle can be reached, also by car, from a panoramic road and a footpath.