You can feel the high technique everywhere, with the sculptures and the traditional Japanese decorations that make it look like a Western-style building.
Here are some of these.

Three-storied looking building

From the exterior the building looks like it has three floors but if you look at the verandas you will see it has actually four.

Such a complex structure is due to the fact that Western technology has been incorporated into part of the structure that supports the roof, as well as the fact that it was constructed using advanced wooden construction techniques from ancient Japan.

Corridor

Around the center is a 14-sided donut-shaped corridor.
It gives access to 8 rooms that where used as hospital rooms.

Spiral staircase

This staircase to go up from the second floor to the third floor.
Zelkova wood is used and the sides are engraved with the arabesque pattern, which is a traditional Japanese decoration.