Alnwick Castle in the period 1798–1814. The Abbot's Tower houses the Regimental Museum of the Royal Northumberland Fusiliers. An increase in public interest in the castle was generated by its use as a stand-in for the exterior and interior of Hogwarts in the "Harry Potter" films. Its appearance in the films has helped shape the public imagination regarding what castles should look like. Its condition contrasts with the vast majority of castles in the country, which are ruinous and unfit for habitation. The River Aln flows past the north side of the Castle. There is a deep ravine to the south and
Alnwick District (2,500), with the remainder dispersed across large and small villages, hamlets and isolated dwellings. It was the second most racially homogeneous community in the country, in the terms measured in the 2001 census with 99.6% of the population recording their ethnicity as "White". The district was formed on 1 April 1974 as a merger of the urban districts of Alnwick and Amble and the rural districts of Alnwick and Rothbury. The district was abolished as part of structural changes to local government in England effective from 1 April 2009. Its responsibilities were transferred to Northumberland County Council, which became a