The Ulsan Hyundai Motors factory is the largest single factory in the world. The company consists of five independent factories, with around 32,000 personnel who produce an average of 5,800 vehicles per day. Another surprising feature of this complex is 600,000 trees planted in the area, making it a factory surrounded by forests. Factory visitors can visit a vehicle and port manufacturing factory that holds a ship weighing 76,000 tons; First reservations are needed for tour.