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Photo: Hans Bezard, CC BY-SA 3.0 via Wikimedia Commons
At the southwestern corner of the island stands the lighthouse that once marked the point of the Ferro-meridian. Finished in 1933, it's not nearly as old as the Ferro meridian, used as a reference point on 17th-century maps. It's accessible by a rough gravel road through an even rougher moon-like landscape.
The Punta Orchilla Lighthouse is an active lighthouse on the Canary island of El Hierro in the municipality of El Pinar. The need for a lighthouse on the island was highlighted in the second maritime lighting plan for the Canaries, and it first became operational in 1933.
© OpenStreetMap contributors
El Sabinar is a forest of "sabina" threes - Phoenician junipers - at the western tip of the island. Nearby is the church Santuario de la Virgen de los Reyes.
Los Letreros. Here you can find traces of the Bimbaches, the first inhabitants of the island. It's in a region with few trees, accessible by foot only. There's a visitor center accessible by car, where you can learn about the people, the settlement and the rock inscriptions. The sites themselves may be accessed by tour only, which needs to be reserved at least one day ahead.
Beautiful, blue (azul) seaside resort
If you travel uphill the old road from Frontera, you will arrive to a flat area (llano means flat in Spanish) with a small parking lot and water source. From there, there are two hiking trails. One leads to a rainforest, and the other uphill to a volcanic crater and into a pine forest.