If you go poking around the old train buildings off of ul. Kamienna and you have a very, very strong spidey-sense for street art, you might find these two prowlers poking around as well. Today this old warehouse is occupied, but the gentlemen that work there don't seem to mind urban explorers taking photos of the art leftover from when their depot served as an obscure art gallery. To find it exit ul. Kamienna at the renovated PKP building and walk straight back off along the bus parking between the two administrative buildings. You'll find these images at the entrance of the very last warehouse in the complex.