Unique Site for a Wedding in Connecticut?

I once went to a wedding in St. Paul's, Minneapolis that was held at an old post office. It was beautiful, historical building. The reception took placa in the main atrium. The location was unique and beautiful. I was wondering if anyone would know of unique places in Connecticut. We are in Faifield county. Maybe an old historical building, an old warehouse, I don't know... I'm open to everything.. I just didn't want a traditional wedding at a reception hall. Thanks!!