The MariRangers Guild Hall is a ruined guild hall inside the center of the Tree Maze. There is a ladder in the center of the hall that leads down to a dungeon, commonly referred to as the MR. The MariRangers guild itself was the first official guild of Oberin, dating back to the First Era. The hall, along with the rest of human civilization, was destroyed by the Black Plague. The ruins are perhaps one of the most well-preserved antiquities in Oberin, aside from the remnants of Oberin City.