Luckily there aren't any.
Yet. Remember that Poland is supposed to receive in the next 12 months 20 thousand illegal immigrants. (Thank Angela Merkel for that).
Since the average birth rate in Afhganistan / Somalia / Yemen is around 6 kids per woman, in 2 years those 20 thousand will bring their kids and wifes (can be around 4 wifes, but lets be optimistic and say that each one have only 1).
So, at the end of the day, in 2 years Poland will have 160 000 illegal immigrants.
So then they will be able to create a city of the size of Rzeszów.
At this city, the Polish constitution will not be the law. Instead, the law will be their own law.
So yes, answering to the OP, wait until 2 years more and you will have not an area, but an entire city.