Small, but fun for the kids. It has an amusement park with rides in good weather and a small interactive centre. There is also a petting zoo with lots of guinea pigs, rabbits and ducks, etc. My older son stayed there the whole time!
Walk along the avenue from the station to the bridge (around ten blocks) for a photographic tour of the statues. After crossing the bridge, head to the giant clock, climb the stairs up to the square on the hill and look back for a nice panoramic view.