Cao Bang province shares a long border with China, and traveling through the region offers glimpses into this frontier area. Key attractions like Ban Gioc Waterfall and the Pac Bo Historical Site are located directly on or very near the border.

Observe the boundary markers (like Border Stake 108 at Pac Bo), see the contrasting landscapes on either side, and witness the cross-border interactions at official crossings or local markets. Understanding the Vietnam-China border context adds another layer to the Cao Bang experience.