Cat Ba is known as the Pearl of the Gulf of Tonkin, located in the south of Ha Long, beautiful and romantic. Green beach, rich seafood. Coming to Cat Ba, tourists also participate in unique festivals, bringing the colors of indigenous people such as Den Ba ... Cat Ba has pristine forests on limestone mountains. The south-east of the island is Lan Ha Bay, and the west is Cat Gia Bay with green beaches, white sand, no waves, suitable for bathing and tourism. Pass on the sloping island, winding, through the national park.