Halong Bay Small Group Adventure Tour including Cruise from Hanoi. Discover the striking beauty of World Heritage-listed Halong Bay on this Halong Bay small group adventure tour from Hanoi. Drive through the rural villages of northern Vietnam, board a private Chinese junk and set sail through turquoise waters dotted with over 2,000 magnificent limestone islands. Explore the many karsts and enjoy a seafood buffet while taking in the bay's mystical scenery. Book this Tour and Save 30% Off Halong Bay Small Group Adventure Tour including Cruise from Hanoi.