Sail around the stunning natural wonders of halong bay on this full day tour from hanoi including a scenic round trip drive through northern vietnams rural landscapes with thousands of gorgeous limestone cliffs jutting from its calm jade waters the unesco world heritage site offers spectacular scenery for a relaxing excursion step aboard a sailboat and enjoy a seafood lunch as you take in the magnificent scenery stopping to explore karsts and caves such as thien cung heavenly cave and da