Morning, meet our guide at hotel and transfer to Halong Bay, literally called Descending Dragon Bay, is the most wondrous of bays sculpted when an ancient dragon swished its immense tail. Vietnam’s most obvious attraction is Ha Long Bay, adjacent to the Gulf of Tonkin, and currently attracting nearly two million visitors each year. Despite its status as one of Vietnam’s busiest tourist centres, its enormous scale, unique geomorphology and indisputable splendor makes a visit almost essential. Enjoy 04-hour cruise to visit islands and grottoes, leaving those that have been equipped with lights, walkways, refreshment stalls and souvenir shops to the tourists. The exceptions are Dau Go, a large cavern worth visiting for its grandeur, and Sung Sot, for its remarkable stalactites and stalagmites. Return back to Hanoi in the evening for overnight stay.