A cruise around the UNESCO World Heritage Site of Halong Bay is a must for anyone visiting Vietnam, known for its stunning karst cliffs, islands, and caves. This tour allows you to experience the Bay's beauty without the need for an overnight stay. Explore Sung Sot (Surprise) Cave, the largest cave in Halong Bay, kayak through the breathtaking waters, and take a break to swim or hike at Titop Island.