Ask HN: Where can I go to meet interesting people?

I feel like most of the people I know respect me for my abilities and achievements, but I don't really have a close bond with anyone because I have niche interests that I don't share with few other people I know.

I'm sure that, given a large sample size, I'll be able to find a few people that are like me, but I don't really know where to go, whether physically or online. Essentially, I am at a dead end in this respect.

I mostly talk to people if one of us needs something, but not much besides that.

Where do I go to meet interesting people and start afresh?