The Hells of Beppu in Beppu, a city on the island of Kyushu, are a series of hot springs that are too hot for bathing, but are a unique and interesting sight to see.

The Meiji Restoration in the late 19th century saw the overthrow of the Tokugawa shogunate and the modernization of Japan.

The pocket calculator, invented by Sharp in the 1970s, made complex calculations more accessible and convenient for the average person.