
World Museum, Liverpool
Five floors, free, and it covers three things small children reliably love: giant dinosaurs, an aquarium and a space gallery. The best wet-weather day within half an hour.
Liverpool, Merseyside

Under Exchange Flags, a few streets back from the waterfront, sits the command centre from which the Battle of the Atlantic was directed. A hundred rooms of reinforced concrete.
The museum has kept the map room, the operations rooms and the corridors much as they were, instead of turning them into a modern interactive experience. That is the appeal and also the limitation.
Pricing is unusual and worth spelling out. An adult day pass is £16.50, a child under 16 is £1. An annual pass is £19.50 for an adult and £5 for a child, so two visits in twelve months makes the annual version the obvious buy. Students and ex-forces pay £14.50 with ID, groups of ten or more £14.50 a head, carers come in free with each paying visitor, and Second World War veterans get in free with a gift bag. A guided tour is £75 for a group of up to fifteen on top of entry.
Open every day, 10am to 6pm, last entry 5pm, and there are no timed slots to juggle.
The access position is the thing to check against your own family: two floors, staircases only marked up or down, no lift, and toilets by reception with ramp access that are not wheelchair accessible. Visitors who cannot manage the stairs can see some of the upper-floor rooms without being charged. Baby changing exists and there is seating dotted through the building. Take a child of seven or more who has heard of submarines and you will get two good hours out of it.
Worth knowing: Two floors reached only by staircases, so no pushchairs; better for about 7 upwards.
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