Harry Potter's popularity continues to attract people to visit the film locations and inspiration behind the films.
You'll be able to see the fan-traceried vaulted ceiling in the tower housing the staircase and landing used in two Harry Potter films; Harry Potter and the Philosopher's Stone and Harry Potter and the Chamber of Secrets. Also the Tudor architecture of the grand Dining Hall in Christ Church College which was the inspiration for the set design of Hogwarts Great Hall.
Used as a location in Harry Potter and the Goblet of Fire, you can visit the south cloisters walk where in the film young wizards wear ‘Potter stinks’ badges. Also see the northwest corner of the cloisters grass quadrangle where under the great Holm Oak scenes of Mad-Eye Moody turning Malfoy into a ferret were filmed.
The Divinity School served as Hogwarts infirmary in four films, and where Professor McGonnagal tought students to dance in Harry Potter and the Goblet of Fire. The Duke Humfrey's Library was Hogwarts library. Both are located at the Bodleian Library, where tours can be booked.
Pitt Rivers Museum
Whilst in Oxford you might like to visit the Pitt Rivers Museum and decide if it was the inspiration for Diagon Alley?
Visit Blenheim Palace and look for the distinct huge old Cedar tree at the lakeside in the Park. This featured in the flashback scene in Harry Potter and the Order of the Phoenix.