The Emerald City is the capital city in L. Frank Baum's fictional world 'The Land of Oz' from the Oz books. In Beyond the Kingdoms, Alex, Conner, Mother Goose, Lester, Goldilocks, Jack and Red travel into the story and the Land of Oz in persuit of the Masked Man. They follow the Yellow Brick Road to get to Winkie Country. On their way, they pass the Emerald City, but lack the time to visit it. The outside is described as following: Alex is very disappointed they can't go inside.