The diagrams illustrate how changes a town of America saw from 1948 to 2010.
It is clear that significant alterations can be seen on the map over whole period. Furthermore, in 2010, Airport was introduced in top-right corner of the map where there used to be factories, and the Local supermarket and some of Residential houses which were located in the center of the map and replaced by the commercial buildings in 2010.
In 1948, there were some buildings in the American town. Factories were located, in the north-east of the town. Petrol station was in the vicinity of that. There used to be residential houses in the center and right of the map, and local supermarket and church were on the bottom of them.
By 2010, the city changed a lot during the period. Airport appeared in the top-right of the map and the petrol station remained untouched. In the center of the map, we can see that commercial buildings and Supermarket were constructed. The church which was located in the bottom of the map was removed to make a way for Sport stadium.