Cat Ba island is part of an archipelago that has been designated by UNESCO as a World Biosphere Reserve. This reserve may be found to the south of Ha Long Bay. On Cat Ba Island, vacationers have a wide variety of options for things to do, like going on boat tours, touring the fishing hamlet, and going to Cat Ba National Park. This page provides a detailed guide on how to go from Hanoi to Cat Ba island, including information on the cost of tickets, the schedule, and the various transportation companies.