The world famous Halong Bay is a must see in any travel to Vietnam. The bay and its 3,000 islands will surprise you no matter how many pictures you have seen before.
The area was declared a UNESCO World Heritage Site in 1994. Many travel agencies in Hanoi offer excursions to Halong Bay. Allow, at least, two days to visit the bay. The islands vary in size, some are small -- as the one in the picture --, others are quite big. Some of the islands have grottoes that can be visited.
If you stay with me, I will give you a sneak preview of the Halong Bay area, and give you some useful tips.