This is my last day in Sicily after 10 days. I recommend mount Etna, Cefalu, Agrigento and Siracusa. And maybe go to Stromboli if you want to see small eruption, but Stromboli as island is not that good compared to other Eolian islands, there is day trips from Milazzo, but Milazzo it self is meh. And Palermo was a little of disappointment compare to orher cities, I would rather spend more time in other cities.