Trang An is an ecotourism area surrounded by mountains of limestone, lakes, caves and a rich ecosystem with hundreds of different species. The crust in the Trang An region has a geologic history of 245 million years and includes six strata from of the Triassic and Quaternary Ages. 

With the total area of 1,961 hectares, Trang An Eco-tourism complex boasts 48 grottoes and caves, 31 valleys and the hallowed cultural area of Bai Dinh Pagoda. Cruising around the area, tourists will get a chance to use the mountains as walls, the rivers as roads and the caves as palaces.This is a wonderful trip for your exploration of Trang An natural landscapes of rugged limestone mountains, wildly flooded valleys and a massive system of mysterious caves.

In Trang An, boat trips are offered to enable visitors to explore the breathtaking beauty of the maze-like aquatic cave system, which is famed as the “sole aquatic cave system” in Viet Nam’s Northern Delta region. The caves, sculpted into an unlimited variety of geological formations, each reaching from dozens of meters to hundreds of meters in length, are connected by 31 “thung” (lakes). Distinguished from one to the other by its own unique beauty or a fairy tale attached, each bears its own name, such as Sang (Light) cave, Toi (Dark) cave, Ba Giot (three-drop) cave, Nau Ruou (Brewing wine) cave, Dia Linh cave, Ao Trai cave, Si cave, Sinh cave and others.

Besides, there are numerous historical relics related to architecture, economics, social and military history from the Dinh, Le and Ly dynasties. There are many valleys like Tran Temple Valley, May Valley, Khong Valley, Nau Ruou Valley.

According to statistics, Trang An eco-tourism complex has over 310 species of higher plants, many algae and fungi. In particular, there have some rare woods and amount of valuable trees using for food, medicine. In addition, there has about 30 species of mammals, 50 species of birds, dozens of species of reptiles and some rare animals such as: chamois, leopard, phoenix…