The Fortress of Nerra was the home of the Chieftain of Dorne and its family. From the fortress the Chieftain ruled over Dorne and kept order. The fortress was a large stone structure which stands in the harbour city of Nerra on the island of Dorne. It faced the harbour and the waters known as the Sea of Serpents that surround Dorne. A thousand years ago, when Chieftain Peregrine passed away, the Fortress became the seat of power for Annoltis and the city's name was changed to Oltan, until Dorne was rid of his tyranny partially by the actions of Rye, Sonia and Dirk of Weld.