Mount Vesuvius is famous as the volcano that erupted in Roman times (AD 79) and buried Pompeii.
The volcano is just 6 miles from the modern city of Naples and is a very popular visitor attraction with a lot of visitors coupling a half day at Pompeii with a visit to Mount Vesuvius. Mount Vesuvius is one of the world's most dangerous volcanoes. The volcano has an eruption cycle of about 20 years, but the last eruption was in 1944. Nevertheless, this doesn't stop thousands of tourists visiting the world-famous volcano every year.
Since 1995 the volcano has been a National Park. https://www.rometoolkit.com/whattodo/pompeii_vesuvius_bus.html
The National Park covers - including land and marine areas - 20,180 ha, with a coastal development of 180 kilometers. La Maddalena, mother island and capital of the homonymous Archipelago, is the Park gateway. It is the one and only inhabited island, except for the village of Stagnali in Caprera Island and the settlements of Santa Maria. http://www.parks.it/parco.nazionale.arcip.maddalena/Epun.php