Visit Cat Ba Island

The best place to stop in Halong Bay if you want to do something other than explore the incredibly clear waters is Cat Ba Island, which is the largest island in the region.

The island is home to some nice hotels, Cat Ba National Park, which occupies a third of the island, as well as a number of Vietnam War-related tourist destinations, most notably the Hospital Cave, an underground hospital and safe house that was bomb-proof. Adventurers who want to explore Halong Bay up close and personal can begin their journey from Cat Ba. The best places to rent kayaks, go on tours to explore the island's caves, go on a stroll through the national park (the trails are well marked so you won't get lost), or go rock climbing are here. While organized tours are available, many tourists just pay a local to take them on their boat if you'd like to experience something that isn't covered by your cruise package.