The Tokyo Metro Ginza Line portion between  and  was the first subway line built in Japan and East Asia completed on December 30, 1927. Central Tokyo, like Osaka, has been designed since about 1900 to be centered on major railway stations in a high-density fashion, so suburban railways were built relatively cheaply at street level and with their own right-of-way. Though expressways have been built in Tokyo, the basic design has not changed.