[1] It was designed in the classical Italian style by the Bolognese architect Antonio Landi, technician of the Kingdom, at the request of the governor of Grão-Pará, Manuel Bernardo Mello de Castro, and inaugurated by the Portuguese colonial administrator João Pereira Caldas to be the headquarters of the Portuguese government as the palace of the governors of the State of Grão-Pará and Maranhão.

[2] In 1994, during the administration of governor Jader Barbalho, the palace was transformed into the Pará State Museum (MEP), housing several forms of artistic manifestations, from visual arts exhibitions to video-mapping projections on its facade.

[3] In 1754, during the Pombaline period, Friar Miguel de Bulhões, replacing Governor Mendonça Furtado, requested an inspection of the Government Palace, which indicated the need to use propping to prevent it from collapsing.

[4][3] The governor then asks Landi for a project of a "decent house without superfluities", stating that the building must not be at great expense, and submits it to the Court.

[6] On January 6, 1835, led by Antônio Vinagre, the rebels stormed the government palace in Belém, where they remained in control until 1837, when they abandoned the city and fled to the interior of Pará to continue fighting.