You can certainly do that in Houston. Food from anywhere is something we have more of than most American cities, and you don’t have to wonder if you’ll be able to get a table in the restaurant tonight. But if you like living in densely populated London, you might not prefer how spread out Houston is. I do love visiting London to experience a totally different world from my usual daily life.

Definitely, even Mumbai and Bangalore.

No, you can't do it in Paris or Berlin. I don't know enough about LA and SF but, like Berlin, they're much smaller than London. Berlin is 1/2 the pop of London.

For example, there are 4 Uyghur restaurants just on my cycle to work. According to Google, Paris has 1 and Berlin has 0.

Only NYC can compare for population, density and diversity.