Greetings! I published an earlier version of this lesson in my first book "112 Activities and Tactics for Life Science Teachers" through Teacher's Discovery back in 2004. Teachers' Discovery closed down its science branch division in 2014. Over 900 copies of the aforementioned book sold during its ten year run. I decided to release a new version of this activity for today's generation of science teachers and parents of home schooled children. In this activity, students make basic connections between functions of cell organelles in eukaryotic cells and the role of structures and entities in a city.