Abstract
This paper aims to clarify the evolution of the street types in Arequipa, particularly in the proximities of the Chili River during 1870 to 1940. In this period the modern urban and architectural ideas brought by European traders, combined with the local tradition produced a new townscape, in which the urban growth, the economic and industrial development co-existed harmoniously with nature and the river. The unique urban structure of the city was based on the relationship of the colonial urban core and the several street types developed around the river areas, expressing the population's approach to their landscape resources.