In terms of architecture, Son Tay Ancient Citadel almost only retains two ancient gates intact in the South and West. As for this photo archive, it was collected and stored by an overseas Vietnamese family in France who once lived on Quang Trung street. When the citadel was restored and rebuilt, they respectfully donated it to the relic site. There are two ancient trees that are considered souls here: the banyan tree at the tree at the southern and western city gates. The tree roots embracing the city gate create a very unique gift from nature