Saint-Etienne church in Ars, a lighthouse in middle of the night

It's the oldest church on the island. Do you see its black and white bell-tower? Saint-Etienne has two colours, because it was useful for the boats when they reached the coast...

A part of the nave dates back to the 11th century, the portal to the 12th century. But the church is slowly sinking in because the ground is unstable!