Seaside stays began two century ago in Brittany. It led the country to a new use of the littoral and a new identity. Seaside resort created ex nihilo or with its seaside area or with many seaside suburbs. Each evolved and the development proved interactions between these cities often rivals. However, commons qualities appeared in tourists advertisements in Brittany: no promoters, maritimity, cheap way of life and authentic stays. Seaside resort of Brittany is the complex result of maritime history.