Would be interested in a source for this claim, but it from the map it at least looks reasonable. https://en.wikipedia.org/wiki/Marunouchi_Line#/media/File:Tok

Would be interested in a source for this claim, but it from the map it at least looks reasonable. https://en.wikipedia.org/wiki/Marunouchi_Line#/media/File:TokyoMetroMarunouchi.png https://en.wikipedia.org/wiki/Marunouchi_Line#/media/File:To...