You could look out the bathroom's porthole windows and see what's become of the future.
Upstairs is a second room with a porthole window and a new bathroom.
There was a little porthole window from which he saw a sky of blazing stars.
There were five oval porthole windows on each side of the fuselage.
Through the porthole windows I could see passengers moving down the aisle to their seats.
They were stainless steel with circular porthole windows in them.
I look at the porthole window to my left.
The sub was now very close, lights shining into the porthole windows.
A small porthole window showed the view as they descended.
He pulled himself up, his face pressed to the porthole window.