Administrative divisions of Peru nation's capital, is located in this province.) Callao also is its own region, which contains only one province, the Constitutional Province of Callao. Administrative divisions of Peru The administrative divisions of Peru have changed from time to time, since the nation gained independence from Spain in the early 19th century. The old territorial subdivisions have split or merged due to several reasons, the most common ones being the need for decentralization, and population increase, especially in Lima. Peru was divided into 24 departments ("departamentos"; singular: "departamento") until the creation of the regions in 2002. These regions are governed by Regional
Trujillo, Peru and others. The Chimu culture built its primary settlement at what is known as Chan Chan, which was the capital, having an estimated 100,000 people at its peak. It is the largest pre-Columbian city built of adobe and has been designated a UNESCO World Heritage Site. Its remains are northwest of the current city center. The present Spanish–Peruvian city of Trujillo was founded in an ancestral territory populated by ancient indigenous civilizations. The Spanish founded new cities expressing their culture in what they called the "Viceroyalty of Peru". The Moche civilization flourished in northern Peru with its Huacas del Sol