We visited Prague Castle yesterday. It’s a huge UNESCO World Heritage site that consists of a castle, cathedral, convent, towers, and etc. It was quite an uphill climb up to the top of the castle, but we were rewarded with a very nice view of Prague city.
Overall, the attraction doesn’t really cater to child visitors. There aren’t too many things that children below 10 can interact or play with. But we did find some cannon replicas in the Golden Lane (a community within the castle) and that was about the funnest thing they encountered in the castle.