Cat Ba, the most beautiful and the largest one in the archipelago of 1969 islands, is a natural world heritage amid the Ha Long Bay and was recognized by UNESCO as a World Biosphere Reserve on April 1, 2005. Cat…
Cat Ba, the most beautiful and the largest one in the archipelago of 1969 islands, is a natural world heritage amid the Ha Long Bay and was recognized by UNESCO as a World Biosphere Reserve on April 1, 2005. Cat…