Wizard City is a place that Ice King went to in the episode "Reign Of Gunters." He went to Wizard City to find his Demonic Wishing Eye, that Gunter stole. Ice King was unaware that Gunter stole this item. Many wizards in Ooo can be found here, such as BUFO. It was seen again in Wizards Only, Fools, where Finn, Jake and Princess Bubblegum went to get a cold spell to Starchy. It is guarded by Wizard Police, and ruled by the Grand Master Wizard.