Osaka Children's Paradise has been open for 20 years this year. Think about 20 years ago when I was a kid, I might have "Big Snow Mountain" to skate. This super-large three-storey "Lao Niu Museum" is really enough for children to have a good day, even if parents are not so closely following, there is no need to worry that the children can not be found, because there are few people at all.