Your council isn’t the only one holding a MB college and often enough, other councils gladly welcome outside of council attendees if you simply ask.  We’ve been to the Millstone (CT) Nuclear Plant Badge-O-Ree and the Harvard University Merit Badge College (where better to get your law or medicine merit badge!).  Other’s we’ve considered are Camp Sikorsky (Aircraft), and the Naval Academy program.

This website serves to consolidate a listing of colleges:

http://www.meritbadge.info/index.html