The Knight bus is a must see for any Harry Potter fans. You will find it parked in London just outside Diagon Alley. This attraction has a character meeting at scheduled times of the day. You can talk to the knight bus driver and his talking head.
This bus is one of two props that were actually used in the Prisoner of Azkaban. The girls were excited that they were touching the real thing!
While you can not actually climb aboard and walk around. At the back of the bus you can see inside.