Contains letters, books and manuscripts pertaining to Portugal's exploration and Macau's relations with Europe, China, Japan, and Southeast Asia from a wide variety of governmental, civic, ecclesiastic and private sources. The most valuable have been put on microfilm, including 7500 items dating from 1587 to 1786.
The archives are houses in one of the mansions in colonial style in Avenida de Conselheiro Ferreira de Almeida restored by the Macau Government which won the Pacific Area Travel Association's Heritage Award, in 1982.
