Cambodia is strewn with places of national, local or, most frequently, village importance, considered as potent places, that is to say, places that are said to have agency and a positive or negative power of interaction with human beings. This paper emphasises the constituent principles of potency using case studies based on ethnographic research conducted between 2007 and 2015 in Pursat Province, western Cambodia. Beginning with the analysis of the sanctuary of a powerful land guardian spirit called Khleang Muang, the author progressively guides the reader to all the potent places that form a network which spatially tells the legend of the sixteenth century Khmer king Ang Chan who passed by Pursat coming from Angkor and settled in Lovek (south of Tonle Sap Lake). Violent death and sacrifices, rituals, spiritual energy called paramī, old buildings, monasteries, precious tableware kept in the soil, trees, stones, termite mounds ... all those constituents of the potency of the places are analysed. The author's discussion of the core of potency (pāramī and paramī) enables her to show how Buddhism and land guardian spirit cults are entangled in a single still hierarchical religious system. Finally the author analyses how potent places in Cambodia embody a process of localisation of the nation-level institution of monarchy.