In 1872, Japan's first large train station was built at Shiodome (Shimbashi Station). The station was closed in 1986 (near the peak of Tokyo land prices). An astounding 54.36 acre block of the World's most expensive land was put up for development (right beside Ginza).
A "new city" was developed at the site that includes 13 massive commercial skyscrapers, shopping areas with European style buildings and residential high rises.
Many of Japan's largest companies have their headquarters in Shiodome. Including Japan's largest advertising conglomerate: Dentsu.
Caretta (a shopping mall in Shiodome) is popular at Christmas for it's Christmas light display.
A good place to view Shiodome's architecture is nearby Hamarikyu Gardens — a large Edo-era Japanese garden.