Every year the cinemas in Budapest arrange the Cinema Celebration. For four days you can watch every film for around 500 forints (to be exact, 490 forints), around 2 Euro. In 2008 they will repeat this event, and from September 25-28 you can join several hundred thousand people in Budapest and visit one of the cinemas.
For more information about the cinemas in the city, check out our cinema page where you can read about Palace Cinema, Corvin, Sugar Cinema, Cinema City Arena Plaza and so on.
The official Cinema Celebration page (only in Hungarian).