A short stay in Phnom Penh is best spent on a handful of sites that cover both the citys royal grandeur and its darker modern history. The riverside Royal Palace, still an active residence with gleaming spires, pairs naturally with the nearby Wat Phnom, a hilltop pagoda considered the citys founding site. For historical depth, the National Museum houses centuries of Khmer sculpture, while Tuol Sleng Genocide Museum and the Choeung Ek Genocidal Center offer a sobering, essential look at the Khmer Rouge era. Together they balance beauty and remembrance in one focused itinerary.