Matsuricon is an annual anime convention hosted in Columbus, Ohio. Every year thousands of attendees take part in this convention. Though there is a heavy pop culture theme at this event, you can still find a selection of educational workshops known as panels. Panels are free to attendees. Every year there is a selection of panels dedicated to more traditional Japanese culture, from kimono to geisha. If you head over to the official Matsuricon website you can check out their special guest line up which includes a variety of professional voice actors who specialize in anime.
Website with more information: http://matsuricon.org/