Thanks for the link.
We need someone who speaks Polish to tell us what it says about the hippos.
I clicked on the hippo symbol on the interactive map, but it turned out to show the rhino enclosure!
From what I saw it looks a pretty decent zoo.
Just had a quick play on that myself - the one you've clicked on is the rhino exhibit as can be seen in my other photos - they seem to have labelled it 'hipopotamy' by mistake! You can see the hippo house is you scroll right over to the righthand of the map - near to the lions and giraffes.
You can opt for the English language version of the Zoo's site (look on the left of the Home page, above the Facebook logo)... and the virtual tour of the hippo exhibit (at the bottom of the home page) responds to your curser (although apparently the camera has had alot of coffee!)