a friend of mine just 2 weeks ago went to Palos Verdes (one of the ones listed in sernudista.com.ar). I thought it was just a nudista country park, but he says it's really quite full on, with rooms for sex where people leave the door open when they're happy for others to join them (or not, according to their wishes), and places in the woods where you come across people having sex, in couples and in groups. In fact, I just looked at the website and it does indeed say it's a swingers place. However, he spoke very well of everyone there and says there is no pressure whatsoever for you to join in, you can just go and enjoy being a nudista in a lovely setting, without getting involved in any sexual overtones. He said the place itself was fabulous, with wonderful walkways in the woods. However, he did also say that he saw things that he couldn't even tell me about...