Some 2 kms. off the Normandy coast of France lies this 100-hectare island that is both a fortress and a monastery with a cathedral at the top. It used to be isolated from the mainland during high tide but a new causeway built a year ago permanently makes access easy for visitors can walk across it or take the shuttle bus that goes back and forth every 15 mins. or so. It was low tide when I came for a visit so there was no sea around it which made the pictures I took less dramatic. The whole island with its medieval structures and cobblestone streets is impressive nevertheless.