Visiting Tokyo? Get Familiar with the Toei Subway Lines
Like the Tokyo Metro subway lines, the Toei subway is the other major operator of the Tokyo subway system. If you read the Tokyo Metro article, you'll be glad to know that there are only four lines on the Toei, and one of them is the Asakusa, which provides express services to both Narita and Haneda airport. Be sure to plan your trip beforehand so you know exactly where to go on the subway lines!