Indeed. I was a bit frazzled and the second subway station was virtually identical inside, so I was slightly disorientated and experiencing deja vu.
The sizes of some of their stations (Tokyo, Shinjuku, Kyoto) and the huge shopping malls! Incredible, but they can be confusing and easy to get lost in initially. However, google maps to the rescue (it also showed entrance/exit names, which was useful).
In Kyoto station, we were aiming for Ramen alley, a food court on the 12th floor of the upstairs mall.
The escalators were arranged in a line. So, at the end of each escalator, you could get off at the floor or go a few steps more to the next up (or down) escalator, rather than doing a 180 degree turn to the next escalator in your direction of travel.
It gave a lovely overview, with the 12 escalators running from the front to the back of the dept store in a diagonal line.