The architect, Mateus Vicente de Oliveira, had trained under Ludovice of Ratisbon and during the construction of the royal palace and convent of Mafra. The more sombre and massive classical palace at Mafra does not appear to have influenced the design for Queluz, which is in a lighter, more airy style. Work began in 1747 and continued rapidly until 1755, when it was interrupted by the Great earthquake of 1755, after which the labourers were more urgently required for the reconstruction of the city. The earthquake proved to be a catalyst, because the urban rebuilding process stimulated the development of the arts in Portugal. The subsequent architecture of Queluz was influenced by new ideas and concepts. When work recommenced in 1758, the design was adapted for fear of another earthquake. Thus the later works take the form of low, long buildings, more structurally stable than a single high block: as a result, viewed from a distance the palace resembles long enfilades linked by higher pavilions rather than one single construction.