A steep, narrow rock staircase, King of Aragon staircase, leads down to the sea. With an inclination of 45 degrees, dizziness and painful thighs are almost guaranteed. Legend has it the staircase was built by the King of Aragon's guards in one night during the failed siege of Bonifacio in 1420, though it's most likely to have been constructed by residents to collect fresh water from a spring.
This is a killer path, especially the climb back, so it's best to avoid tackling it throughout the hottest hours of the day. Once at the bottom, you can refresh with a nice dive into the turquoise waters. The walkway leads to the sailors' graveyard (Cimetiere Marin), with its stunning views of the strait.