in the 18th century, the great farms started to become smaller but it would be in the beginning of the 19th century, with the arrival of the portuguese royal family, that the whole region would start to deeply transform.

in the 20th century the area went through a major development of the local industrial infrastructure - to allow for the expansion of the population, and for the construction of factories and access routes, large embankment projects were initiated to cover the wide mangroves existing along the coasts of guanabara bay.