A City offers more services than a town. Cities have more than 20,000 people and can have upwards of a million people. Cities are often the regional center of government and trade. The previous readings in this series have covered some of the other characteristics of cities.
Here is a picture of Duluth's downtown area from the Duluth Entertainment and Convention Center parking lot.
Duluth, Minnesota located at the western end of Lake Superior is just such a city. Duluth has 75,000 people and serves as many economic functions. Duluth's primary function is the shipping industry.
Here is a picture of Duluth's harbor from up on the hill.