In Sicily, not far from the Strait of Messina, there is the largest active volcano in Europe: the Etna. Besides being one of the highest in the world, it is a natural scientific workshop on a volcanic area: its intense activity is observed and told since classical times by about 2700 years. The surrounding landscape has been extensively modified by centuries of eruptions causing a transformation of the mediterranean flora and fauna typical of Sicily in an evocative atmosphere almost lunar. Here is the Etna Natural Park, established in 1987, and visited thanks to many nature trails and special tours to several vents scattered at various altitudes, produced by the eruptions over time. The volcano overlooking the city of Catania from above, reshaping the landscape, which becomes unique and spectacular at night, when the impressive river of lava flowing slowly along the mountain walls with fountains that light up the sky. Within the protected area of the Etna Park, not to be missed are the Valle of Bove, a huge basin on the eastern side of the volcano, the Grotta of Gelo, an imposing volcanic cavity with an eternal glacier. And yet, the Alcantara Caves, formed over the centuries thanks to the erosion of the cold waters of the river. Among the cities, as well as Catania, Taormina are to be reported, the nearby UNESCO sites of Piazza Armerina, in the Val of Noto and Syracuse and Pantalica.