Where can we go for ds’s 3rd birthday?

[WinkyisbackontheButterBeer]

Ds will be 3 on Saturday. I have just looked and it is forecast to rain all day so our outdoor plans aren’t going to happen.

Can anyone suggest anywhere indoors that we could take him for the day? We are Leeds based but able to travel to an extent.
Recently went to tropical world and eureka so don’t want to do them again. We go to soft play regularly so would prefer to avoid that too.
Any help would be wonderful.
Thanks

Cinema?
Do you have a Local steam train?
Local leisure pool?

Thank you. He does like swimming but our local pool is pretty dull.
I wonder whether there are any more fun, toddler friendly ones closeish.