Parque Nacional del Teide en Fasnia Nature · Fasnia, Tenerife - Abona, Santa Cruz de Tenerife The municipality of Fasnia reaches, in its highlands around Montaña Abreu (2,402 m), the Parque Nacional del Teide, declared a World Heritage Site by UNESCO on 28 June 2007 and shared with twelve other Tenerife municipalities. Photo: Obdulio Obduliez (CC BY-SA 3.0 es) What to see and do in Fasnia