TITLE: up or down? round and round

This photo was taken in The Round Tower in Copenhagen, Denmark.

The observer does not know the direction when looking at this photo. What will be the next step? Will it go up or down?What is known though is that it will be a circle...

Which reminds me of life.

(Btw, I was on my way up, when taking this photo.)

AUTHOR: Carina Vogel (United States)