In which country would you find the Trevi Fountain?

In which country would you find Schönbrunn Palace? In which country would you find Hallstatt? In which country would you find the Palace of Versailles? In which country would you find the Louvre? In which country would you find Pompeii? In which country would you find Cinque Terre? In which country would you find the Amalfi Coast? In which country would you find Santorini?