My first stop along Croatia’s coastline was a ferry ride to Korcula, only 20 miles long but 6th largest of the collection known as the Dalmatian Isles. It’s old town is charming with streets designed in a fishbone shape and walled since the 13th century. Built for protection from the sea winds in the winter and cooled by onshore winds in summer. Reputed to be the birthplace of famed explorer …