It emphasizes the Four Noble Truths, the Eightfold Path, and the concepts of samsara (cycle of rebirth), karma, and anatta ...

The dharmachakra, also known as wheel of dharma, is widely used as the symbol of Buddhism. It shows a wheel with eight spokes, representing the Noble Eightfold Path and the teachings of the Buddha.

The Budokan was modeled after Yumedono, of course. The eight sides remind me of the eight petals of a lotus flower and the Noble Eightfold Path. Perhaps it’s designed this way so that energy ...