Alnwick is a market town in the county of Northumberland, England. It is located on the River Aln and has a population of around 8,000 people. The town is known for its castle, which has been the home of the Percy family, the Dukes of Northumberland, since 1309. The castle has been used as a filming location for several movies and TV shows, including the Harry Potter series. Alnwick is also home to the Alnwick Garden, a large ornamental garden that features a variety of flowers, trees, and water features. The town has a long history, with evidence of human settlement dating back to the Roman period. It also has a variety of shops, restaurants and pubs, and good transport links to other parts of the country.