What is the name of the magical kingdom in 'The Phantom Tollbooth'?

The magical kingdom in The Phantom Tollbooth is called the Kingdom of Wisdom. Norton Juster’s 1961 fantasy novel follows Milo, a bored boy who receives a mysterious tollbooth and drives through it into the Lands Beyond. The tollbooth leads him toward Wisdom, a once-prosperous kingdom that has been divided by conflict between words and numbers.

The kingdom’s two major cities are Dictionopolis, associated with language and ruled by King Azaz the Unabridged, and Digitopolis, associated with mathematics and ruled by the Mathemagician. Their disagreement has contributed to the exile of the princesses Rhyme and Reason, whose return Milo eventually helps bring about.

The Kingdom of Wisdom is not simply a conventional enchanted realm. Its strange places turn abstract ideas into adventures: the Doldrums punish thought, the Word Market sells letters and words, and the Castle in the Air holds the exiled princesses. Milo travels with Tock, a watchdog with clock-like features, and the Humbug. Wonderland, Oz and Narnia belong to other famous fantasy works and are not locations in Juster’s novel.