Tokyo Metro Ginza Line - the oldest subway
If you choose your accommodation in Asakusa for your Tokyo stay, you cannot travel around without Ginza subway line.
Ginza line runs between Asakusa and Shibuya, and stops at the main attractions such as Ueno, Akihabara, Ginza, Akasaka and Aoyama/Harajuku area.
You might have thought that the cars of Ginza line are pretty small when you compare to the other subway lines or train, and the stations may look old.
It's because Ginza line is the oldest subway line in Tokyo.
Acutally, the first underground railway not only in Japan, but in Asia!! Isn't it cool? ;)
Upon its opening in 1927, the line was only between Asakusa and Ueno.
It was so popular, so people often had to wait for 2 hours to get on the subway for 5 minutes trip!
Now Ginza line runs every 3 minutes, and takes a lot of people around the big city Tokyo by the smallest cars. It's shown color orange 
on the metro map.
Tokyo Metro >> http://www.tokyometro.jp/global/en/index.html
Metro One-Day Pass >> http://www.tokyometro.jp/global/en/ticket/valueticket.html
The Tokyo Subway Route Map is just like a colorful cobweb. I like it!
Is Tokyo transportation too complicating? Don't know what's the quickest way?
Don't worry, we're always happy to figure out the best way for you ;)
Have a nice Metro trip!