Where is Grandma? by Peter Schossow tells the story of a little boy going to visit his Grandma in hospital. The little boy is bored waiting outside with his nanny while she finishes a phone call, so he goes inside the busy hospital alone to look for Grandma. He tries lots of doors but he can't find her anywhere, although he does overhear lots of interesting conversations and meets lots of different people.
Eventually he meets someone that can take him to his Grandma, although everyone has been worried about where he's got to! It's a really fun story as you follow him around the hospital, with plenty of opportunity for discussion about the people that he meets and the things that he sees.
I received a copy of this book to review. Amazon links are affiliate.