On your final day, embark on an island hopping adventure in the Seto Inland Sea, which is known for its picturesque islands and stunning views. Take a ferry from Takamatsu Port to Naoshima Island, famous for its contemporary art museums and installations. Explore the Benesse House Museum, Chichu Art Museum, and other art venues that showcase works by renowned artists. Afterward, hop on a ferry to Shodoshima Island, known for its olive groves and scenic landscapes. Visit the Olive Park, where you can learn about olive cultivation and enjoy panoramic views of the sea. Don't miss the chance to try local olive-based products, such as olive oil ice cream. Finally, return to Takamatsu City in the evening and savor a delicious dinner at one of the city's renowned seafood restaurants.