Santa Rosalía Aficionados of industrial archaeology will find Santa Rosalía well worth exploring for the ruins of its massive copper-smeltering operation. The former French company town lies on the Sea of Cortez coast of Baja California Sur, some 50km (31mi) east of San Ignacio. The town also has unusual clapboard residential architecture and a church designed by the famous Alexandre Gustave Eiffel, of Paris' tower fame. The prefabricated church was originally intended for a destination in West Africa but somehow ended up being shipped to Mexico. The French left their legacy in other ways as well: the bakery here sells the best baguettes in Baja.