Emerald City is a location on ABC's Once Upon a Time. This city of emeralds is the capitol of Oz, and is where the Wizard of Oz once ruled before being overthrown by the Wicked Witch of the West.
- Zelena Mills (ruler; formerly)
- Wizard of Oz (former ruler)
- Glinda (formerly)
- Hades (visitor; formerly)
- Robin Hood (intruder; formerly)
- Stanum (formerly)
- Scarecrow (formerly)
- Dorothy Gale (formerly)
- Toto (formerly)
- Emerald City is based on the City of Emeralds from The Wonderful Wizard of Oz.
- The Elixir of the Wounded Heart and the Crimson Heart were kept in Emerald City until they were brought to Storybrooke.
- S3, E16: "It's Not Easy Being Green" (flashback)
- S3, E20: "Kansas" (flashback)
- S4, E17: "Heart Of Gold" (flashback)
- S5, E16: "Our Decay" (flashback)
- S5. E18: "Ruby Slippers"
- S6, E18: "Where Bluebirds Fly" (flashback)
- S6, E20: "The Song in Your Heart" (flashback)