If you've visited Natural History Museums in London or New York...well, this is Kraków. This small and modestly-funded (to put it nicely) museum features permanent exhibits on local rocks, minerals, molluscs and fauna that will literally put anyone to sleep. That said, it also plays host to temporary exhibits which generally take up the most space and justify the admission price (currently 'In the Colourful World of Butterflies'), there are some reptiles (who doesn't love reptiles?), a 14,000-year-old mammoth skull and the pride of the collection is the world's only fully preserved (like with skin and stuff) woolly rhinoceros. You won't see that anywhere else, and overall younger kids might find this museum more exciting than any others in Kraków.