The King of Aragon's Staircase is Bonifacio's most memorable single sight: a tight, slanting flight cut into the cliff, dropping from the old town toward the water. It is not a casual stroll. The steps are uneven, the angle is steep, and the climb back up makes most visitors slow down.
The reward is the sense of standing inside the cliff rather than merely looking at it. From the lower path you see the sea chewing at the limestone and the town leaning out above you, which explains Bonifacio's appeal better than any postcard from the harbour.