In the afternoon, take a boat to visit Ha Long Bay - a wonder of the world, tourists stop by boat to visit Thien Cung cave which means "The Palace of heaven" and Dau Go cave (also known as Dau Go cave), which is the attached place. with the historical story of Yuan - Mongol invaders in 1288 by General Tran Hung Dao. Then cruise on the cruise between Ha Long with thousands of towering rocky island...