Hello Stockholmer! Stockholm is soooo Cool! 
Just came across piano stairs on the subway stairways on Odenplan, Stockholm. And to our surprise, Stockholmers are musician in nature I think? Most are prefer to use the piano stairs rather than elevator stairs.
The video above shows what happens when a staircase is converted into a working piano where each step is a different piano key that makes a sound when you step on it.
What if we put it on the shopping complex on our hometown? Would that be something unique?
[ Source ; Other Source ; Original Source ]
Related posts:
{ 1 comment… read it below or add one }
These stairs are awesome and it increased foot traffic by 66%? We need to put these in every transit area in the U.S. to get some exercise.