Due Son, also known as Mount Le, Mount Re or Mount Ke, has a slightly pointed shape and beautiful form. The Eastern side of the mountain rests on Ta Trach Lake. The mountain is like a guardian god, standing at the upstream source of the Huong River, protecting the land where the Temple of Literature and the Temple of Martial Arts Saint are located.

That is Gia Long Mausoleum (also known as Thien Tho Mausoleum), located in Huong Tho Commune (Hue City), which is around 15km to the Southeast of the city center.

It is the Huong River, the river that "embraces Hue in its heart", which is also a priceless gift that nature has dedicated to this place. The Huong River is magnificent from the upstream, with a peaceful beauty and full of poetry as it confluences and hugs around gardens and villages such as Kim Long, Nguyet Bieu, Vy Da, Gia Hoi, Bao Vinh, and Sinh village, etc. And then, before pouring water into the sea, the downstream river area is a place to make a living, which is hard but close and dear to the locals.

Although the Huong River is just located humbly in the area of Thua Thien Hue, this river is still full of beauty from being fierce in the sections of waterfalls in the upstream of the old forest to being gentle and fond when flowing through the delta. Just like that, the Huong River has been an indispensable part in the deep spiritual life of Hue people and Hue culture.

It is rumored that there is a species of fragrant sweet flag growing from underwater on both sides of the Huong River upstream, which makes the river fragrant. I have heard about this fragrant grass associated with the legend about the name of the Huong River, but I have never seen it with my own eyes.