You might want to spend some time browsing the exhibits at Dubrovnik Aquarium, Visia Dubrovnik 5D Multimedia Museum, or Ethnographic Museum. While you're exploring, swing by Lovrijenac Fort, Pile Gate, and Walls of Dubrovnik to learn a bit about the area. Dip your toes in the water at Banje Beach, Lapad Beach, and Copacabana Beach.