Teide National Park, located in the center of the island, is also a UNESCO World Heritage Site. It includes Mount Teide, which has the highest elevation in Spain, and the highest among all the islands in the Atlantic Ocean. It is also the third-largest volcano in the world, when measured from its base. Another geographical feature of the island, the (massif), has been designated as a UNESCO Biosphere Reserve since 2015. Tenerife also has the largest number of endemic species in Europe.