Nihonbashi is a bridge in Tokyo at the center of one of the country's most major commercial districts. Originally built in 1603 as a huge and iconic wooden bridge, Nihonbashi was designated the official starting point of the Gokaidô (five major highways of Edo period Japan) the following year, and the point from which all distances to/from Edo (and now Tokyo) were officially measured. The bridge was at the center of one of Edo's chief merchant districts; in the Meiji period, the wooden bridge was replaced with a stone one, decorated with bronze street lamps in the style of the time. The district is known in particular as the location of the honten, or main branch, of many of Japan's major department stores, as well as many other major commercial establishments.

Today, the Metropolitan Expressway passes over the bridge, covering it in shadow. There are rumors, however, of plans to open up the bridge to the sunlight, or to rebuild the wooden bridge.