The call for papers is here. The ASLH meeting is, of course, the best place to go for serious discussion of legal history scholarship. Non-legal historians who are tip-toeing into legal topics should especially present papers there (just as legal historians should subject their work to scrutiny in other fields of history). And the meeting is smaller than most, making it an especially welcoming environment for graduate students and newer scholars.
If you can't be convinced based on the substance, the Program Committee has put together a helpful webpage about Ottawa, with a link to an NY Times Travel story 36 Hours in Ottawa. For more, the Local Arrangements Committee has assembled a Guide to Ottawa.