The Cologne Cathedral, Germany. Directed by Richard Graveling, Produced by Jane Gerber, Electric Sky, In Vertical City, 4 (Brighton, England: Electric Sky, 2008) 27 minutes. Richard Graveling (Director), Jane Gerber (Producer), Electric Sky (Producer), (2008). The Cologne Cathedral, Germany. InVertical City. 4. Brighton, England: Electric Sky. [Streaming Video]. Retrieved from video.alexanderstreet.com/watch/the-cologne-cathedral-germany database
Propping Up Pisa. Narrated by Maggie Philbin, Produced by Cynthia Page (London, England: BBC Worldwide, 1992)29 minutes. This documentary, produced by Cynthia Page, explores the problem of the leaning tower of Pisa and solutions to prevent it from collapsing. With the help of an old report, a British soil scientist seeks to explain why the rate of tilt has accelerated in recent years.