Argellan Falls is a former Brelish manor that was often used by the Brelish royal family as a summer residence about a hundred years ago. The island is a Manifest Zone, connecting to the plane of Thelanis, which has caused a permanent waterfall to appear near to the manor at the centre of the island. The water is known to be incredibly cold and fresh. This also means that there is a permanent rainbow over the waterfall, which is one of the reasons that the island has been so popular amongst nobles.