Is it true that Białołęka prison is Europe's largest penal facility? .
I doubt it's even Warsaw's largest. The one at the back of Elsnerów looks bigger. Poland's biggest is in Wronki, in western Poland.
Europe's largest is in France, and the local jail near where I'm from in the UK is many times larger.
Białołęka prison isn't very big. It's rather scruffy looking though, like a few Kruszczówki buildings with a wall round. It's probably Poland's best known - the Poles interned Polish dissidents, like Adam Michnik, there.
Why not visit, so you can have a look.