Referring to Ninh Binh is mentioning a series of familiar tourist destinations such as Tam Coc - Bich Dong, Bai Dinh Pagoda, ... But if you are a natural lover and want to find something new. The mermaid cave is a great choice for you. With the extremely unique architecture that is naturally bestowed by nature, it is indeed not exaggerated to say this is one of the most beautiful caves in Ninh Binh.