There is no real life regional place for DA. We all are from all the places in the world lol. But if you wish, you can find tournament dates on official sites like konami.
http://www.yugioh-card.com/en/events/
For your own region, you gotta find the official ygo site that deals with real life tournaments. I am at balkan, south europe, if you are in that region I can list you the sites with scheduled events on them.