Circular Skyscraper
Episode: 1x01 | Airdate: May 24, 2010
Episodes
Leaning Skyscraper
Episode: 1x02 | Airdate: May 24, 2010
World's Tallest Skyscraper
Episode: 1x03 | Airdate: Apr 23, 2012
Episode: 1x01 | Airdate: May 24, 2010
Episode: 1x02 | Airdate: May 24, 2010
Episode: 1x03 | Airdate: Apr 23, 2012
