Okazaki is famous for fireworks, perhaps the most famous in Japan. Back in the 1600s, when the Tokugawa Shogunate was established, the stronghold of the family centered around the Mikawa region. Also a strategically important area because of its central location, the grandson of Tokugawa Ieyasu banned the production of gunpowder outside certain areas of Aichi, Gifu, Shizuoka and Niigata. This ensured that the family maintained a stranglehold on the production of gunpowder, and the technology required to do so.
Because of technology advance, Japan can now build high buildings, which are resistant even to strong earthquakes. Many of those building foundations are special gum bumpers, so the earthqake vibrations can be reduced significantly. This one is a new apartment building near main Nagoya station.