I don't know that it exists anywhere anymore. It can be dangerous for a woman to out drinking alone.

But ladies do go out in groups. As a guy you just have to be nice and chat up the group and don't get hyper focused on any one person. None of them are probably going to drop everything and go home with you that night. But you can often get a phone number (or two) and go on a real date from that.

If you want to go to a bar and meet other people, go to one with a pool table. Hitting on women is much smoother when you meet their girlfriend's boyfriend first, and better tolerated whether she's interested or not.