The interior was a complete atrium. The tower had a feeling of freedom. The tower had a doughnut shape as a result of facilities being piled on top of one another. And the spiral staircase lead to the top connecting all the floors.
Whenever the number of people increased, extensions were put in, and before anyone had noticed, it reached 30 floors. As one would expect climbing up to such a height on stairs would take time. That was why in the center of the tower an intangible art was applied that had been installed two years from the start of service. It was an elevator lift that had been installed for the sake of convenience.