Come on, you know wish you'd been there for this!
The video poster, raqscongress, wrote on YouTube that the event took place Saturday, March 6, 2010, in the center of Brussels. It was part of an effort to promote Bellydance as an art form. And is part of the International Raqs Congress activities. You can find out more about them here: http://www.raqscongress.com.
The event was presented by Together in Life NGO (http://www.togetherinlife.org) and Salwa (http://www.salwa.be)