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
Pre-Columbian era The Muisca of Colombia, postdating the Herrera Period, Valdivia of Ecuador, the Quechuas and the Aymara of Peru and Bolivia were the four most important sedentary Amerindian groups in South America. From the 1970s, numerous geoglyphs have been discovered on deforested land in the Amazon rainforest, Brazil, supporting Spanish accounts of a complex, possibly ancient Amazonian civilization. The theory of pre-Columbian contact across the South Pacific Ocean between South America and Polynesia has received support from several lines of evidence, although solid confirmation remains elusive. A diffusion by human agents has been put forward to explain the pre-Columbian presence in