I also have a geographic constraint of a 9mi2 island with roughly 300k people. The details are great as the island has about 12 distinct boroughs that represent social class divisions (think racial divisions in the US). Thus, there's 12 of every item (library, schools, veg shops, coffee houses, pubs, garages, etc...). It makes samples the 100+ pubs quite interesting. As a foreigner, they grant access to all classes and enjoy having some interesting discussions.

Interestingly, as a American-born foreigner, it's very interesting to see the races mixing and people being separated based on perceived class driving by accent employed, social currency, manner used and word selection.

Living by bicycle is a godsend as I otherwise wouldn't interact with these so much as I pass through 3 or 4 of these on my short 1.5-mile commute.