 The rest of the interior also used rustic and folklore motifs, with doorways by Erik O. W. Ehrström, iron wheel chandeliers by G. W. Sohlberg, and a circular main stairway with a cast-iron banister with pine-tree motifs; the newel posts and the benches on the landings were carved wood depicting fern leaves and, again, trolls, and the stained glass featured ferns and owls.The service hall on the first floor was given red pine panelling and a central pillar styled to resemble a tree trunk.However, it has a steel core; behind the façades the building is brick with structural steel and from the start had Swedish-made lifts as well as an electrical generator.