Calvi is a town on the northwest coast of Corsica. It is known for its beaches and its half-moon shaped bay. A huge medieval citadel overlooks the marina from the western end of the bay. It is criss-crossed by cobbled streets and houses the baroque cathedral of St John the Baptist. Restaurants line the harbour on the esplanade of Quai Landry. Perched on a high hill, some distance inland, the chapel of Notre-Dame-de-la-Serra offers a panoramic view of the surrounding area.