
Among these islands, the largest one, Cat Ba Island seems to be the most attractive to tourists with natural beauty. While some tourists come to this island to relax and enjoy some fresh air in luxurious resorts, some others prefer adventurous trips of Cat Ba National Park, Hung Son Cave, Phu Long Cave, and Trung Trang Cave. Although speedboats connecting Hai Phong and Cat Ba Island have been operated recently, a considered number of tourists still choose traditional ferry to reach the island. With 80 minutes travelling on the sea by ferry, tourists have enough time to enjoy the great landscape, as well as the relaxing airy atmosphere between the two beautiful coastal cities.