Analysis of information sources in references of the Wikipedia article "Posto Fronteiriço das Portas do Cerco" in Portuguese language version.
In 2004 an immigration and customs building (Posto Fronteiriço das Portas do Cerco) was erected during the renovation of the area, and now towers over the nineteenth century gate
O edifício localizava-se no antigo istmo Ferreira do Amaral, no extremo norte da península, junto à China continental, epróximo do posto fronteiriço das Portas do Cerco
