However, in the 19th century Algernon, 4th Duke of Northumberland replaced much of Adam's architecture. Instead, he paid Anthony Salvin £250,000 between 1854 and 1865 to remove the Gothic additions and other architectural work. Salvin is mostly responsible for the kitchen, the Prudhoe Tower, the palatial accommodation, and the layout of the inner ward. Some of Adam's work survives, but little or none of it remains in the principal rooms shown to the public, which were redecorated in an opulent Italianate style in the Victorian era by Luigi Canina.