Editing Chatsworth House (section)

===19th-century alterations===
[[File:Venus supported by Iris, complaining to Mars 1820.jpg|thumb|right|''[[Venus (mythology)|Venus]] supported by [[Iris (mythology)|Iris]], complaining to [[Mars (mythology)|Mars]]'' by [[George Hayter]], exhibited in 1820 at the [[Royal Academy|RA]] "to acclaim" (in the Ceiling of the Ante Library Chatsworth House)&nbsp;– Winner of the Royal Academy Painting of the Year in 1823]]

The 6th Duke modified much of Chatsworth to meet 19th-century standards of comfort, suiting a less formal lifestyle than that of the 1st Duke's time. The corridors round the courtyard were enclosed and given a multicoloured marble floor, so that rooms could be easily reached from indoors, and there were more shared living rooms to replace individual guest apartments. The cook's bedroom and the back stairs made way for the Oak Stairs, topped by a glass dome and built at the north end of the Painted Hall to improve internal communications. Along the staircase hang portraits of the first 11 Dukes and some of their family members. The Duke made a library of the long gallery, originally created by the 1st Duke. He was a great lover of books and purchased entire libraries. The Ante-Library in the adjoining room was originally used by the 1st Duke as a dining room and then a billiard room, before the 6th Duke used it for his growing collection of books. This was just one of the rooms where the Duke installed a single-pane window, which he saw as the "greatest ornament of modern decoration".<ref name="yourguide"/> The window in the Ante-Library is the only one preserved. Much of the scientific library of [[Henry Cavendish]] (1731–1810) is in this room. The most notable addition by the 6th Duke to Chatsworth was the Wyatville-designed North Wing. Plans for a symmetrical wing to the south were begun, but later abandoned.<ref name="yourguide">{{cite book |title=Your Guide to Chatsworth |year=2012 |publisher=Streamline Press Ltd |isbn=978-0-9537329-1-3}}</ref>

The entire ground floor of the North Wing was occupied by service rooms, including a kitchen, servants' hall, laundry, butler and housekeeper's rooms. On the first floor, facing west, were two sets of bachelor bedrooms called "California" and "The Birds". The main rooms in the new wing face east and were accessed from the main house through a small library called the Dome Room. The first room beyond is a dining room, with a music gallery in the serving lobby where the musicians played. Next is the sculpture gallery, the largest room in the house, and then the orangery. The Belvedere Tower contains a plunge bath, using marble from the 1st Duke's bathroom, and a ballroom that was later turned into a theatre by the 8th Duke. Above the theatre is the [[Belvedere (structure)|belvedere]] itself, an open viewing platform below the roof.