In 1780–1784 he redecorated the formerly Rococo halls of the main Catherine Palace built by Bartolomeo Rastrelli in the 1750s; what started as a modest remodelling soon resulted in the most lavish interiors of the whole palace, reminiscent of Palladio, Raphael, Robert Adam and Clerisseau yet blending into Cameron's unmistakingly own style. As early as 22 June 1771 Catherine praised the architect: "There are not yet but two rooms to do and there one rushes, because just here one sees nothing to equal it. I confess that I myself will not tire during nine weeks of watching this."