Cat Ba is likened to the Pearl Island of the Gulf of Tonkin. This place attracts many tourists by the wild beauty of blue sea, white sand and golden sunshine. Cat Hai island district is an archipelago with up to 367 large and small islands. Cat Ba is the name of the main island about 100km² wide, 30 nautical miles from Hai Phong port, located south of Ha Long Bay, creating a complex of islands and sea caves that attract tourists. Coming to Cat Ba, visitors can feel that this place has a cool and temperate climate. The seasons here show clearly, the atmosphere makes people feel comfortable. Cat Ba Island is a giant green carpet containing many mysteries and attractions. Cat Ba deserves to be the third biosphere reserve in Vietnam, currently recognized by UNESCO as a world biosphere reserve. The road through Cat Ba island: 27 km long, with many winding, steep passes, downhill, through fields, along the edge of the sea, through the national park, with interesting and charming scenery.