Mega Cities

Challenge Description
Each of the teams has to create a city block which they have to connect to an already built city in 15 hours, then they are given an additional 3 hours to show their block of the city under attack from something of their choice.

Challenge Appearances

 * Season 1 - Episode 1
 * Advantage Challenge
 * Advantage: The Golden Brick
 * Won by Matt & Lyn