Lan Ha Bay is located to the east of  Cat Ba Island  and adjacent to  Ha Long Bay  to the south. Lan Ha Bay covers an area of more than 7000 hectares, including a fairly unspoiled archipelago with about 400 densely large and small islands creating a huge, fanciful picture.

The special thing on the bay is that there are many islands with sandy beaches at the foot of the mountain, making the beauty more vivid, allowing visitors to visit the boat to roam on the sand or swim at these pristine sand beaches. In Lan Ha Bay, there is Cai Beo floating village, where more than 2 hundred households live on houses designed on buoys and the village has been studied by domestic and foreign archaeologists. its thousands of years of history.