The Aeolian Islands or Lipari Islands, named after the main island, are a volcanic archipelago north of Sicily in the Tyrrhenian Sea in Italy. For more than two centuries the islands have been an ideal site for the study of volcanology and geology. They have been inscribed on UNESCO's World Heritage List since 2000. This archipelago comprises seventeen islands, seven of which are inhabited. Only three islands are accessible to cars. All islands have a volcanic origin but only Vulcano and Stromboli still have an active volcano.