Arcadia is the heart of the Dreaming, the home of the fae. Its importance is clear from the presence there of the gates.
After the Sundering, Arcadia was eventually taken over by the Fomori.
Arcadia lies in a deep valley within the foothills of the Splinter Mountains, accessible by a single gateway.
The focus of Arcadia is the great central plaza which opens out before the gates. Within it are a fountain and, by the time of the Sundering, the Weeping Tree.