Visit Halong Bay’s largest limestone cavern, Sung Sot Cave (Amazing Cave), during a private cruise around the World Heritage area. This daylong excursion with a personal guide delivers you by minivan through the countryside. Board your boat at Halong Bay for a seafood lunch and pass hundreds of islets en route to the cave. You have the option to kayak or stop at Ti Top Island for a swim and panoramic views. Whichever you choose, the day trip from Hanoi is sure to make a memorable experience.