In the city, in this busy city, i am usually walking with some tension and intention. So many things are unknown: Where am I going? How do i get there? Can I cross the street now? I have to remember, have to remember to look in the "wrong" direction for oncoming traffic. I have to be constantly alert, which adds up to stress.
Then, once in a while, i find a garden in the city, on some quiet back street. A place where birds sing. And i can relax.