Such lists differ from one person to another but as far as I know these countries:

 1. Amsterdam: I like the quiet European cities where you can think about your projects, as the society is open to pluralism, there are some successful projects launched from that city like BitFury.
 2. Dubai: You can find everything you want in this city, an excellent place for all projects, although I do not see incentives for blockchain compared to other projects.
 3. Ljubljana: Small town and Bitstamp exchange headquartered in that town.

for others ASK GOOGLE