Among many curiosities some of them appear more often, some less often, but the Johannisburg is the largest and the most frequent of them all. I can understand that after some time there is a park in every developing town, even a zoo in every town. But in my games after a couple years every town has their own Johannisburg. Then, after some years game creates another Johannisburg in a town that already has one.
Does it depend on any parameters in settings, climate zone or whatever? There are so may curiosities created that appear so rarely. Do you also receive so many Johannisburgs, or just me?