Illa fantasia water park intror r head to illa fantasia the biggest water park in barcelona for a day of watery fun and games in the spanish sunshiner r illa fantasia water park full detailsr r grab your cossie and head to the 75 000m2 illa fantasia water park in barcelona for a day of water fuelled fun and gamesr r no matter your age there is something to suit everyone at illa fantasia with 3 huge pools over 20 water slides mini golf and an excellent safe play area for children comp