Complex sentence: It was constructed with a building housing the company's head office, horse stables, a wagon depot, a forge and a weighing shed, that all were drawn by the Norwegian architecht Henrik Thrap-Meyer.
Split into simpler sentences: It was constructed with a building housing the company's head office, horse stables, a wagon depot, a forge and a weighing shed. These installations were all drawn by the Norwegian architecht Henrik Thrap-Meyer.