It's part of the SCA, but these guys try to revive and re-enact the rapier fencing of the late Rennaissance through Napoleonic times. The group has a website.
I got the practice on time, and looked around the park for signs of fencers. Shortly, I saw man in a doublet and knickers carrying a fencing mask, which I took to be a reasonable sign that he was a part of this group.
The local boss of the group -- excuse me, Baron, who goes by the name Laertes greeted me and spent some time going over the rules and whatnot. He showed me all the various kinds of weapons with which they fence - traditional foil and epee, but also heavy-bladed rapier, dagger, buckler, and even cloaks. I like the idea of fighting with a cloak and epee, particularly if I can use a pelisse, instead of a cloak. Sadly, they do not allow sabers of any sort, as percussive hits are not allowed, though draw and tip cuts are. My dream of being a hussar will have to remain unsatisfied.
We went through basic footwork, attacks and parries. We drilled on a tree for a little while, but then suited up in fencing armor and did a bit of sparring. It was a fairly vigorous two hours, and it was as enjoyable as anything is, at the moment. I think I'll go back and stick with it, I like the idea of perfecting yet another useless martial art that I hope never to use!