The pagoda is bold in the architectural style of the Nguyen Dynasty, not magnificent, massive, though small, humble but delicate. The main hall is built in the traditional Hue style of house mixed with a bit of royal architecture with a tiled roof, windows decorated in the shape of "Tho" letter, surrounded by walls. Behind the main hall, a large garden, in the middle of the mountain, there are Dai Tu garret, the middle area is the Buddha worship, the area on the right to worship Quan Yin and the area on the left to worship Bodhisattva Dai Chi. At the top of the mountain is Dieu Ngu, a 3-storey tower about 13m high. Standing at the highest level of the tower, the view from the distance is a charming landscape with vast lagoons and blue mountains.
In addition to the architectural system bearing the imprint of the Nguyen Dynasty architectural style, the Thanh Duyen Pagoda also has 113 ancient trees with a lifespan of 200 years such as pine, mango, jackfruit, ironwood... The abbot Thich Minh Chinh said that the ancient pine trees across the sky as the words of the poet Nguyen Cong Tru: "In the next life, please do not be a man - Be a pine tree stand in the middle of the sky to ring" is also a symbol of this national pagoda.
The road to the pagoda runs between the ancient pine trees, about 5m wide, and about 50m long, with all 38 steps of stairs. All 3 architectures pagoda, garret, and tower over hundreds of years still exist and have been restored. Particularly, Dieu Ngu tower, located on the top of the mountain, from here can open the panoramic view of Tam Giang Lagoon, Tu Hien sea gate, and Bach Ma Mountain far away.