There used to be a great Electronics Open Air Marked in Poland. Over 100 tents and permanent shops open every weekend.

http://www.wolumen.com.pl/index.php?page=infogielda

Nowadays there are probably 20 electronics shops remaining, the rest is occupied by grocery/meat/fresh produce suppliers.

You can see how it evolved in Street View switching camera between 2009-2017 footage.

https://www.google.com/maps/place/Wolumen+53,+01-912+Warszaw...