In planning the building for the General Staff of the Russian Army and the ministry on Palace Square (1819-1829), and keeping the curved shape of the square, built to a plan by Yury Felten, Rossi created an irregularly shaped, curved open space, devising the faades of the buildings so that the form of the splendid square became dominant. In contrast to Zakharov, who had planned the Admiralty near by so as to avoid the impression of flatness and to impart a sense of separateness and volume to the very long faade, Rossi emphasized the flatness of the faade that follows the curved edges of the square. A triumphal arch [topped with a quadriga by Pimenov and Demut-Malinovsky] --composed of two arches set at an angle to each other to conceal a sharp bend in Bolshaya Morskaya Street--forms a magnificent entrance to the Palace Square, unifies the whole ensemble and links the square and palace, as envisaged by Vasily Bazhenov and Ivan Starov. The eastern wing of the Staff Building now houses part of the Hermitage Museum.