He took the 'stairway' up to the third floor. [=he went to the third floor by walking up the stairs]
(..) Now when Riley thinks of that moment with Dad, she's gonna feel sad. Bravo. I'm sorry, Joy. I don't really know. I thought maybe if you, if you, I mean... Joy. We got a stairway coming up. Just don't touch any other memories until we figured out what's going on. - Okay. - Alright. Wait, what. (..)2015 Inside Out