Influencer Becka Blackburn invited viewers to the "worst wax museum in Poland" in the popular video.
Prince Charles' wax figure was called "Hugh Grant after 20 Jagerbombs," and Kate's huge forehead and ageing looks were criticised.
Prince William's smile has been described as "creepy" by some viewers because his face appears to have been shortened.
The museum is only five minutes long and has a reputation for being frightening, with one child reportedly crying.
The museum is ranked 392nd among the top things to do in Krakow.