to its previous Baroque style. In 1788, Friedrich Wilhelm II arranged for the building of the Belvedere, designed by Carl Gotthard Langhans, in the grounds beyond the Carp Pond. The building was used as a teahouse and as a viewing-tower. Langhans also designed the Palace Theatre, which was built between 1788 and 1791 to the west of the Orangery wing. The mausoleum was built as a tomb for Queen Luise between 1810 and 1812 in neoclassical style to a design by Heinrich Gentz. After the death of Friedrich Wilhelm III, it was extended; this design being by Karl Friedrich Schinkel. It was extended again in 1890–91 by Albert Geyer to accommodate the graves of Wilhelm I and his wife Augusta. In 1825, Friedrich Wilhelm III added the Neuer Pavilion, an Italianate villa designed by Schinkel, to the north of the palace. This was damaged in the war in 1943 and was reconstructed between 1957 and 1970. Burials Louise of Mecklenburg-Strelitz Frederick William III of Prussia The heart of Frederick William IV of Prussia Prince Albert of Prussia (1809–1872) Auguste, Princess of Liegnitz Wilhelm I, German Emperor Augusta of Saxe-Weimar Today The palace and grounds are a major visitor attraction. For an admission charge, parts of the interior of the palace are open to visitors, including the Old Palace (Alte Schloss) and the New Wing (Neuer Flügel). The Old Palace contains many rooms with baroque decoration, and includes a room called the Porcelain Cabinet, which holds thousands of porcelain objects. On special display are the crown jewels and the royal silver and fine porcelain tableware. The New Wing includes the opulent rococo State Apartments of Frederick the Great and the more modest Winter Chambers of Friedrich Wilhelm II. The formal and informal gardens are freely open to the public. For an admission charge, the Mausoleum, the Belvedere and the Neue Pavilion are open to visitors. The Mausoleum contains the graves of, and memorials to, members of the Hohenzollern family. The memorial to Queen Luise includes her reclining effigy, which is made from Carrara marble and was designed by Christian Daniel Rauch. Also open to the public are the Belvedere, which contains a collection of Berlin porcelain, and the Neue Pavilion, which houses a collection of arts and crafts of the period when Schinkel was active. The former Orangery houses a restaurant and café. Destroyed during World War II, the Great Orangery