I had the pleasure of shooting a wedding at the Lazaretto Ballroom in Essington, PA this September. They have the most beautiful spaces to have a ceremony. And there are old buildings on site that you can use as a backdrop for your pictures. They even have signs that they customize for your pictures. The river is right nearby so you can take pictures alongside the Delaware River as well.
Inside, the ballroom itself is lovely and spacious. The staff was friendly and accommodating and kept the day on track.