The imperial crown style architecture was thoroughly criticized at a time when modernism was flourishing. It was the style that combined a Western European classical architecture with a Japanese traditional roof. The representative buildings remained in Marunouchi district, Nagoya.
These were the Nagoya City Hall, completed in 1930, and the Aichi Prefectural Government Building, completed in 1931. In the Nagoya City Hall competition, Kunio Maekawa, who had been a pupil of Le Corbusier, proposed a modernist box-shaped architecture, but the juries rejected it. They selected Kingo Hirabayashi's plan with a combination of brown and beige exterior walls, a clock tower with a blue-green tile roof imitating the patina roof of Nagoya Castle, and ridge tiles like a gold Shachihoko (dolphin-like fish) that was the same as Nagoya Castle.
When I stood on this spot 90 years after its completion, the reconstructed Nagoya Castle, the Aichi Prefectural Government Building, and the Nagoya City Hall created harmony, functioning as the major landmarks. If Maekawa's modernist architecture had realized, it would have become an intense landmark that overwhelmed Nagoya Castle with its newness and gigantic scale in the prewar townscape, which was lined with many old-style buildings. Meanwhile, at the present time, it may have divided the area and weakened the motivation for the reconstruction of Nagoya Castle. Some places were suitable for the modernist belief, in which architects thought as best to create a new architecture for a new era. However, in this place, which had the most notbale cultural climate in Nagoya, it seemed that the crown style was the correct answer even if it had received criticized for long time.
The Nagoya City Hall and the Aichi Prefectural Government Building survived the war damage, and the post-war period, when its change was even worse than the war damage and old buildings had been demolished. Now, both were designated as a national important cultural property while the modernist architectures disappeared.
The reason why both survived must have been because the structure was steel-framed reinforced concrete, which was stronger and more expensive to build than reinforced concrete, and their exterior and interior were finished with the best materials. They didn't spare the expense, in addition to the effect that those were painted black with coal tar to avoid US air raids during wartime.
If the high construction cost is divided by the long period, it becomes reasonable rather than luxurious, that is, the ultimate savings. That is the Nagoya style.