In 1654, the estate of Queluz, which pertained to the Marquess of Castelo Rodrigo, passes into the hands of the Royal Household, and incorporated into the Casa do Infantado.

[2] A long project, around 1758 the remodeling of the palace was under the direction of Mateus Vicente de Oliveira, who was regularly required in Lisbon, to help in the reconstruction of the city.

[2] In 1782, after Robillon's death, the project at Queluz was placed in the hands of Manuel Caetano de Sousa, with the palace expanded to provide quarters for the Royal Guard, administration, stables and other dependencies, including the Torre do Relógio (Tower Clock).

[2] The building was named for Maria I of Portugal, whose consort (Peter III) initiated the transformation of the small estate into summer palace.

[2] The space is addorsed along its southern extent by another rectangular body, with a two-story structure separated by stony frieze, its parapet decorated by stone pilasters (along the northern, eastern and western facades).