Shot in the city of Ochanomizu, Tokyo. During I saw the railway, two trains were just passing each other. The train running in this photo is Marunouchi Line. Although it is a subway line, it runs on the ground around here.
This is the second oldest subway line in Tokyo. And the lines which were old were not built deep in the ground. Sometimes, they run on the ground even in the city center. If you think that the subway run alway underground, you have another think coming.