Most every city had a card artisan training arena, which was one of the most important installations of the public infrastructure. Card artisan training could be pretty dangerous, and if precautions weren't taken, it could involve people gathered around, causing unnecessary casualties. The training arena was a very strictly and carefully segregated area to make it convenient for card artisans to undertake every kind of specialized training.
Apart from the drilling grounds and the specialized training grounds which were strictly limited to the card artisan classification, other areas were open to anyone.
Even the small town of Burlington had a small-scale training arena, which naturally had only the most basic training conditions.