There are several really sweet acoustic venues in upstate NY
The Egg
There are a couple of theaters in the venue. Everything about the main room is irregular. It was an amazing venue but because of the irregularity of the room it sort of gives you a feeling of being unbalanced. It was strange walking around in there. I thought it was just me at first but when I mentioned it to the group I was with several of them described a similar "feeling"
I worked in Empire State Plaza building #3 for two years. I saw several events at "The Egg", include orchestral music, lectures and plays.
It is a very strange looking building. Getting close to if feels strange, because it is hovering over you.