Advertising Museum Tokyo is a small, modern museum in Shiodome devoted to the history of Japanese advertising. The displays move from printed notices and posters to radio, television, and contemporary campaigns, with enough English to make the main story clear.
The wartime propaganda material is especially interesting, and the museum is easy to pair with Ginza or Shiodome. It is best for design, media, and modern-history fans rather than casual sightseers.