On December 28, l908 , Europe's most powerful earthquake shook southern Italy , killing more than 80,000 people. Survivors relocated to other cities, some immigrated to the United States . The epicentre was in the Strait of Messina which separates Sicily from the Italian mainland . Messina was completely destroyed . These postcards, in the Little Darwin earthquake collection, came from a British traveller who had visited the area and said they could be valuable one day.