*nods* That configuration is actually in my Faery Miscellany, and I hope someday to have a house on enough land to accomodate such a thing. As for building one in a park, there are parks around, but not probably the same sort of thing you'd be thinking of. Lots of play equipment and sand and baseball fields. Not anything wild enough to conceal such a thing so it wouldn't be disturbed, aside from Sanborn-Skyline which is well-camped and also a bit of a hassle to get to. Mrf.