Nudist Gatherings (nude)

We are novices at nudism (only two resorts). I was wondering if there are such things as skinny-dip gatherings, or other get togethers for people just to be nude. Especially in this cold weather, an indoor gathering would be fun. I know there are fetish and alt gatherings, I was just wondering if there was any such things for nudists.

Thanks for any of your positive inputs.

~ Butterball Couple