Current emphases on tourism, services and offshore banking. Internally varied urban structure large, old, internal highland cities (mexico city, guatemala city, san salvador) Tourist areas along the coast of mexico, costa rica, panama. These all highlight the variety of urban areas that cater to much more diverse but specific industries than a north american city. Less of a port emphasis than in the caribbean. Spanish influence of grid surrounding square is more pronounced (more later) A great deal of change in the past 50 years - tourism, resources (oil), industry. Cities can be based on population density and non agricultural employment, but it varies per country, this exemplifies different ideologies of cities in this area. Consider differences in density between barbados and canada. Consider the difference of activities on the fringe of cities (caribbean vs n. america) the gta and just outside of it for example is still under the sphere of influence of.