The Nihonbashi district was a major mercantile center during the Edo period: its early development is largely credited to the Mitsui family, who based their wholesaling business in Nihonbashi and developed Japan's first department store, Mitsukoshi, there. The Edo-era fish market formerly in Nihonbashi was the predecessor of the Tsukiji and Toyosu Markets. In later years, Nihonbashi emerged as Tokyo's predominant financial district. The Nihonbashi bridge first became famous during the 17th century, when it was the eastern terminus of the Nakasendō and the Tōkaidō, roads which ran between Edo and Kyoto. During this time, it was known as Edobashi, or "Edo Bridge." In the Meiji era, the wooden bridge was replaced by a larger stone bridge, which still stands today. It is the point from which all distances are measured to the capital; highway signs indicating the distance to Tokyo actually state the number of kilometres to Nihonbashi. The area surrounding the bridge was burned to the ground during the massive March 9-10, 1945 bombing of Tokyo, considered the single largest air raid in history. Despite careful maintenance and restoration, one area of the bridge still has scars burned into the stone from an incendiary bomb. It is one of the few traces left from the fire bombing that leveled most of Tokyo. Nihonbashi was a ward of Tokyo City. In 1947, when the 35 wards of Tokyo were reorganized into 23, it was merged with Kyobashi to form the modern Chuo ward. Shortly before the 1964 Summer Olympics, an expressway was built over the Nihonbashi bridge, obscuring the classic view of Mount Fuji from the bridge. In recent years, local citizens have petitioned the government to move this expressway underground. This plan was endorsed by Prime Minister Junichiro Koizumi in 2005, and the Tokyo Metropolitan Government and Ministry of Land, Infrastructure, Transport and Tourism announced in 2017 that they would begin a detailed study of the project, with a goal of beginning construction following the 2020 Summer Olympics in Tokyo. If implemented, the construction costs are expected to total ¥500 billion.
In the late 1990s GeoCities Japan was headquartered in the Nihonbashi Hakozaki Building in Hakozakicho. At one time Creatures Inc. had its headquarters in the Kawasakiteitoku Building in Nihonbashi.
