The production is boosted by enthusiastic population and by boosts of certain great buildings. It cannot be motivated, and hence, can be plundered at any time when production is finished.
Comparison[]
The Arena of Victors is much like the Bazaar. It has the same size, different shape, and produces the same quantity of each production with the exception of the 1-hour production, which is medals for this building but Guild Power for the Bazaar. Also, the Bazaar costs roughly 15% more population.