In Santorini, you’ll marvel at the iconic-whitewashed buildings lining the coast. Explore the Bronze Age ruins at Akrotiri or spend the day tanning on the red sand beaches. Mykonos is known for the non-stop party atmosphere, but it also provides ample opportunities outside the clubs. Immerse yourself in Greek mythology at the archeological sites on Delos or learn about local nautical history at the Aegean Maritime Museum. Start things off in Croatia with a walk along the famous stone walls that line the coast of the city of Dubrovnik. Take a cable car to the summit of Srd, a mountain just outside the city or visit the Rector’s Palace, a 14th-century Gothic-Renaissance museum.