Truong Co mausoleum is the resting place of Lord Nguyen Hoang (1525-1613), the first Nguyen lord, who laid the groundwork for the southern expansion. According to the late history professor Phan Huy Le, he was a benevolent, tolerant, and kind lord, deeply caring for his people and possessing a strategic vision.

Following his death, Lord Nguyen Hoang was initially buried at Thach Han mountain in Quang Tri, before being reinterred in La Khe Trem village, now part of Kim Long ward, Hue City. The mausoleum is situated upstream of the Perfume River, near the confluence of the Ta Trach and Huu Trach branches.

In front of Truong Co mausoleum, there is a crescent-shaped lake, steles, a decorative screen, and lush greenery. During emperor Gia Long's reign, the mausoleum complex was constructed on a grand scale, featuring two surrounding walls enclosing Lord Nguyen Hoang's tomb. Over time, many structures deteriorated, losing their original integrity. In 2016, the Hue Monuments Conservation Center restored the mausoleum with funding from his descendants.

The two walls encircling Lord Nguyen Hoang's tomb are constructed from a local stone, standing over 2 m high and nearly 1 m thick. Frangipani trees adorn the mausoleum grounds and its surroundings.

The only entrance into the mausoleum is an arched gate, exceeding 2 m in height. Its yellow door is kept locked daily.

To the right of the mausoleum stands a stone stele detailing Lord Nguyen Hoang's life and achievements, authored by the late history professor Phan Huy Le.

In front of the tomb chamber is a decorative screen exquisitely carved with dragon motifs.

Lord Nguyen Hoang's tomb is a two-tiered stone structure, featuring a stone altar in front. The courtyard floor is paved with red bricks.

Lord Nguyen Hoang's mausoleum is situated adjacent to Huong Tho middle school and the serene residential area of La Khe Trem village. Compared to the mausoleums of Nguyen dynasty emperors, the lord's mausoleum is more modest in scale.

Vo Thanh