The park lands are the reason Adelaide works so well with small children. The city centre is a single square mile surrounded by parks, and over the last decade the council has rebuilt the playgrounds in them one by one. They are all free, all within a few minutes of the tram or a short walk from the centre, and they are genuinely different from each other, which means you can do two or three in a day without the kids feeling like they have seen it before.
The useful question is not which is best but which suits the ages you have with you today.
The big one: Bonython Park
If you only do one, do this. Two 25 metre flying foxes, a water play zone with pumps and a watermill, and a cafe right beside it so nobody has to leave to find lunch. It is on the north-west side near the old gaol, a little further out than the others, and worth the walk.
These sit around the square mile and can be strung together on foot or by tram. Glover and Princess Elizabeth are on the south side, the Quentin Kenihan Inclusive Playspace is built for all abilities, and Hindmarsh Square is the one to know if you are staying in the centre and need somewhere five minutes from the hotel.
Very few park lands playgrounds are fenced, because they sit in open parkland by design. If you have one who bolts, these are the fenced playgrounds across greater Adelaide worth the drive instead.
Yes, all of them. They are public council playgrounds with no entry fee and no booking.
Which Adelaide city playground is best for toddlers?
Look for a dedicated toddler area rather than the biggest equipment. Several park lands playgrounds have a separate under-fives zone so a one year old is not competing with ten year olds on the main fort.
Is there a fenced playground in Adelaide city?
Very few, because the park lands playgrounds sit in open parkland. If a fence matters, it is usually worth driving to a suburban one, and this site lists which are confirmed fenced by parents who have been.