Unicornia

Unicornia is the home of unicorns in the third generation of My Little Pony. Crystal Rainbow Castle is located here.

Spike holding a map in "The Runaway Rainbow". "Each castle celebrates something different, one happiness (pans to yellow), friendship (pans to purple), one family (pans to blue), one kindness (pans to green), one music, one laughter and one celebrates rainbows." (Last three colors are uknown due to change of scene.)