Corruption of Azim
Druids, by definition have no central authority. But if they did have one, and if there was a place that authority was based, it would be this city hidden in the forest on an isolated island. It is quite difficult to get to the city itself. In this place anything not intimately related to nature and nature worship (including individuals) is frowned upon. Bringing outside politics would incur the wrath of Ehlonna herself, it is whispered.
The city itself nests in the branches of the massive trees that make up this forest. The people here are from all races, but the majority are from those races with strong ties to nature worship, like Elves. The indigenous culture of Vallenwood encourages young people to leave and travel the world as a rite of passage, so much is known about the outside world, even if not much interaction with it takes place.