Khoun District is located 3km Southeast of Phonsavanh. This town was once the royal capital - the centre of the Pheuan kingdom.

Though the town was heavily bombed during the war, a few French colonial buildings survived alongside the Si Phoum temple with its large sitting Buddha. On the outskirts, the ancient stupas towering over the city and the vistas surrounding the structures are well worth the hike. A few kilometers beyond the old capital, near the village of Phai Village, lies a jar site. Unlike the jars at the three main sites, these are manufactured out of granite.