What I find interesting is that cities everywhere seem to be roughly at the same level of development. The GDP of a country may be different, GDP per capita might be wildly different, but in most places on earth there are still roads, cars or motorcycles at least, reasonably well built structures, and so on.

If you look at the different architecture, you might be able to figure out roughly where you are, but you would also be able to tell WHEN you with similar accuracy.