Question: things to do with a 2 year old in cardiff?
Answer: Techniquest. Once a month, during term time, pre-school children take priority on Techniquest's exhibition floor. ... 
National Museum Cardiff. ... 
Cardiff Story Museum. ... 
Wales Millennium Centre. ... 
St Fagans National History Museum. ... 
The Cedar Tree Farm. ... 
The Plum Tree. ... 
Parc Play.