Geodesic dome that was close to Kiddie Village. It looks like one I have seen advertised in magazines like Mother Earth News

Hey Pieman, is this yours?

Teepee in the upper meadow

Another shot of a teepee

Another shot of a teepee

I took these pictures, and they belong to me, but you can download them and use them for your own enjoyment as long as you don't sell them or use them commercially.