Located 160km south of Hanoi, Cuc Phuong National Park is home to rare and endangered mammals including leopards, langurs, birds, and butterflies. The park is also well known for its Endangered Primate Rescue Center that is dedicated to the rescue, rehabilitation, and conservation of the endangered primates in Vietnam. Visit the park and veer off to the Ninh Binh region, also known as the Halong bay on land.