Note the small gap in the pavement below the window; this is the end of the fountain from the cylinder above.
From here we can also see the rough edge of the steps on the left; this is the water course of the fountain, which ends in the lower-left corner of the photo, underneath the open window.
The stone wall outside extends beyond the confines of the house to embrace the terrace and provide privacy.
How do designs like this happen? See some of the sketches that can spark a home