Is this really considered a perk? It is a bit like getting paid is a perk. I work in Germany where direct access to natural sunlight is part of our OH&S policies.
I’ve worked in an office without windows, really takes a toll on you.
Like some other people have mentioned, you start wondering if you might prefer to work construction or in a food truck or just anything so long as it's outside. But really you can get most of the way outside with a good office space and you may find you enjoy your job a whole lot more.