West pavilion, detail of the lantern, the gilded dome and finial; n 1715-1724 a two-storey palace was built with a central section flanked by two projecting bays; the original architect is unknown, but further construction followed the designs of Le Blond and Niccolò Michetti. Empress Elizabeth (reigned 1741-1762) commissioned Bartolomeo Francesco Rastrelli to enlarge the palace. Between 1745 and 1755 he raised the building to three storeys and added three-storey wings facing the Upper Park, with galleries ending in two domed pavilions. Of the early 18th-century interiors, the Tsar’s study, with oak panelling in Rococo style by Nicolas Pineau, remains unchanged, as does the oak staircase. Rastrelli designed five staterooms and a series of r...