It is a very simple architecture free from ornaments that was born in the 18th century. The majority of the Colonial monuments in Buenos Aires turn out to be churches. However, we cannot speak of Colonial style with the strictest meaning of the phrase. In fact, its name includes, in a wide sense, the buildings with light, coherent and spontaneous architecture from the Colonization times.
A few Colonial pieces of work have been preserved in Buenos Aires as opposed to the Northwestern region where the Colonial churches flourish in each little village.
At the beginning of the Colonial times, the builders were mainly Jesuits that came from Europe to evangelize the South American native population as from 1568. They made constructions more modern by introducing bricks to replace adobe (a mixture of mud and straws) used at the beginning and they used roof tiles instead of straw.
The style is characterized specially by the usage of moldings for the doorframes, iron for the window bars and the white walls with deep niches for windows and doors. In these homogenous buildings, only the carpets offer some color as the wall tiles did not exist in Buenos Aires. The ones used came mainly from Pas-de-Calais and Ródano in France.