While you cannot see everything, one day is sufficient to experience the "Old Town" highlights of Dubrovnik, Croatia. Known as the "Pearl of the Adriatic," the city’s primary attractions are clustered within a compact, pedestrian-only area. In a single day, you can walk the entirety of the famous City Walls (approx. 2 hours), explore the Stradun (main street), and visit the Rector's Palace and the Franciscan Monastery. You would also have time to take the Cable Car to Mount Srđ for a panoramic sunset view of the terracotta roofs and the Elaphiti Islands. However, a one-day trip usually means missing out on boat excursions to Lokrum Island or the nearby Pelješac wine region. Because Dubrovnik is a major cruise port, "day-trippers" often find the city very crowded between 10:00 AM and 4:00 PM; staying overnight allows you to experience the magic of the limestone streets once the crowds vanish. If you are a Game of Thrones fan, a dedicated walking tour will take up about half your day, so plan your "must-sees" carefully.