The Royal Palace on the Dam, Amsterdam, was built by Jacob van Kampen for a Town Hall; it was begun in 1648 and finished in 1655. It is interesting to note that the structure rests on a foundation of 13,659 piles. The gables are ornamented with allegorical reliefs by Artus Quellin the Elder (see page 137), representing the glories of Amsterdam. Artus Quellin and his assistants also adorned the interior with carvings and sculptures in marble. There are also in the various rooms elaborately carved chimney-pieces, some of them with painted overmantels by Jan Lievens, Ferd. Bol, and N. de Helt-Stocade (1656). The ceilings were painted by J. G. Bronchorst, Cornelis Holsteyn and others. This was not used as a palace until the time of Louis Napoleon in 1808. Het Loo, near Apeldoorn, the favourite residence of William I, William III and the reigning Queen Wilhelmina, received additions during this period; and the Royal Palace at The Hague was also built in the time of William III. The Mauritshuis, on the Vyver (now the home of the famous Hague picture gallery), was erected in 1633–44, for Count John Maurice of Nassau, the Dutch West India Company’s Governor of Brazil, who died in 1679. The architects were Jacob van Kampen and Pieter Post. This house was rebuilt in 1704–18, after a fire. These two architects were also responsible for the Huis ten Bosch (House in the Wood), the royal villa near The Hague, built about 1645 for the Princess Amalia of Solms, widow of Prince Frederick Henry of Orange (1625–47). The wings were added by William IV in 1748, and many of the decorations are of the eighteenth century. The famous apartments are: the Chinese Room, the Japanese Room, and the Orange Saloon, in which the Peace Conference met in 1899. [Illustration: PLATE XXXIV.—_Chairs._ RIJKS MUSEUM, AMSTERDAM. ] The Trêves Saloon in the Binnenhof in The Hague was built by William III in 1697 as a reception-room. It is embellished with a handsome ceiling and portraits of seven stadtholders. The two chimney-pieces in the hall of the first chamber represent War by Jan Lievens and Peace by Adr. Hanneman. An example of Philip Vinckboons’s work is the Trippenhuis in Amsterdam, built in 1662 in the classic style. This is now occupied by the Royal Academy of Science.