I'm going to actually write something different here from the rest of you guys.
1) In the sense of worshipping a supernatural entity(ies), we do not worship anything. As others have said, it would sort of defeat the purpose of being an atheist. Thus, atheists don't meet to worship anywhere, because we don't worship anything.
2) In the sense of being venerating another person, object, whatever, then it would depend on the individual. I personally don't venerate anything. I like certain things, some things I like a lot. It doesn't mean that I worship them, though.
If you want to broaden the definition of "venerate" to include anything that you spend a significant amount of time and energy towards, then, like I said, it would depend on the individual. Some may be Trekkers, some may like playing World of Warcraft, some may be Furries. Hell, one could argue that those of us who comment here regularly venerate the idea of mocking fundies.
Now, if these people are (loosely) venerating these things, then it's no likely they're doing it as atheists. They're doing it as Trekkers, World of Warcrafters or Furries. As such, they'll meet as these people in places where these sort of people congregate.