Curious minds of HN,

I'm looking to learn about what the semi-unknown "capitals" of various industries or niche interests around the world are. These could be cities that serve as the hub, epicenter, or primary gathering place for a specific sector or community, whether mainstream or obscure.

For example, I have the following (personal and not referenced) obvious examples in mind:

- Finance = New York

- Tech Startups = San Francisco

- Hobby Robotics = Tokyo

- Jazz Music = New Orleans

- Vegas = Professional Poker

Less obvious or more niche examples could be:

- The go-to city for Indie Film production?

- Board Game design capital?

- The global center for Biohacking enthusiasts?

What are the cities that you think best represent an industry, subculture, or unique interest? Bonus points for examples that aren't immediately obvious.

Looking forward to your insights.