Why it's the capital
King Ponhea Yat first made Phnom Penh the capital in the 15th century, when he moved the court from Angkor Thom. The city regained that role during the French colonial era and has been the national capital since 1865.
Capital of CambodiaPhnom Penh stands in south-central Cambodia, at the meeting point of the Tonlé Sap and Mekong rivers, which is also where the Bassac River begins.
King Ponhea Yat first made Phnom Penh the capital in the 15th century, when he moved the court from Angkor Thom. The city regained that role during the French colonial era and has been the national capital since 1865.
Aim at the southern half of Cambodia: Phnom Penh is southeast of the big Tonlé Sap lake, on the Mekong River.
Sources: Wikipedia: Phnom Penh