Punta de la Orchilla - a lighthouse situated in the west of the municipality. The lighthouse was first constructed to represent the old meridian. It used to mark the meridian line or the 0 degree-line at the lighthouse which was put by the French in 1634. Many 16th and 17th century maps had the prime meridian at Punta de la Orchilla. In 1884 the International Meridian Conference agreed to use the meridian of Greenwich as the standard prime meridian. Before the meridian change, El Hierro was known as Isla del Meridiano (Meridian Island).