Bob the Builder: Project Build It - Series 3 - Roley's Birds Eye View

Animated adventures with Bob the Builder and all his friends as they construct a new, ecologically-friendly town from scratch. An observation tower is going to be added next to the Visitor's centre to provide a scenic view of Sunflower Valley. Roley is upset because he is too big to ever get to the top of the tower but he would love to see a bird's eye view of the Valley. Wendy and Bob explain how a camera obscurer works using a mirror, a lens and a dark room, and Roley gets his view!