Jaunted dot com (http://www.jaunted.com/story/2007/6/11/21123/1423/travel/Jaunted+Embedded+Travel+Guides:+Buenos+Aires+Grass)
The scene gets weirder after dusk, particularly in the Rosedal (Rose Garden). Often the venue for free concerts in summer, this is also the de facto HQ for BA's ->-bleeped-<- and transsexual communities who ply their trade here at night, leaving the kids, dogs and Frisbees at home.