Mentioned by Mini Travellers - Family Travel & Family Holiday Tips
10 Things to do in Liverpool with Kids
"The World Museum in Liverpool is a free Museum five minutes walk from Liverpool Lime Street. There is a planetarium on the top floor which you need to book tickets for (worth doing when you arrive), an aquarium, a masks display, dinosaur exhibition, bug house and natural history centre to name a few. There is a picnic area on floor 4 and the Clore Natural History Centre is also a good place to while away some time."