A key highlight on many Bai Tu Long Bay cruise itineraries is the stunning Thien Canh Son Cave. Smaller and less crowded than the famous caves in Halong Bay, Thien Canh Son offers a beautiful and more intimate cave exploration experience. Accessed via a pathway winding under a forest canopy, the cave features two main chambers filled with shimmering stalactites and stalagmites.

Inside Thien Canh Son Cave, you'll find formations resembling lotus flowers, baby elephants, and seals. The viewpoint just outside the cave entrance also offers fantastic panoramic views over Bai Tu Long Bay, perfect for photos. Exploring this lovely grotto provides a wonderful sense of discovery within the tranquil Bai Tu Long Bay landscape.