Van Long is the largest wetland nature reserve in the Northern Delta. This nature reserve is located in the northeast of Gia Vien district, Ninh Binh province. Van Long has been put into tourism operation since 1998 and is now a national tourist destination of Vietnam, which owns 2 records of the Vietnam Record Book Center in 2010 which are: "The place with the number of the largest number of white-breeded langurs" and "The place with the largest natural picture".