Minamisenju is home to two rail terminals – the Hibiya Line Terminal and the Sumidagawa Freight Terminal.
The Hibiya Line Terminal is located at the north of Minamisenju to the right of the Joban/Hibiya/Tsukuba train tracks and just below Sumida river. This is where they park all the Hibiya line trains when not in use.
Meanwhile, the Sumidagawa Freight Terminal is located to the right of Minamisenju station and is bigger than the Hibiya Line Terminal. You will see lots and lots of container cargo, as you can see in the picture.
If you are the train fanatic, Minamisenju is a must-visit place in Tokyo.