There is the Massey Memorial organ at the Chautauqua Institution (that is awful to type, so many repeated letters) The Massey lays claim to being the largest outdoor pipe organ (which it is), but I have found surprisingly few pictures of it on the internet. I can't think of any others besides the two Spreckels organs (Balboa Austin and the Legion of Honor Skinner). They do sound very dry, no matter what you do, without all that interior space to reflect and temper sound, the organ sound just kind of dies off, doesn't have anywhere to go.
Here's a video of Carol Williams at the famous Spreckels organ (the Austin)
http://www.youtube.com/watch?v=7RK9SElBfJo the piece is Brahms Hungarian Dance No.5
I can't seem to find another piece for fair comparison.
Once you can tie your arms into a pretzel and your legs into a knot, you've got it under control