We have small antenna chambers at work and I HATE going into them. I find them disorienting, besides the fact that it brings out my claustrophobia.

I've visited a customer's anechoic chamber that was ENORMOUS. About 3 stories high and about 40' x 100', IIRC. The deadening of sound is REALLY weird and disturbing. It hurts my ears a LOT.

Almost like Pod 5, for those of you who've read Lost Symbol.