A building in which you are obligated to spend 40 or more hours per week and 90% or more of the electrically produced lighting is emmitted from depressing fluorescent bulbs. These places are generally referred to as offices, schools, hospitals, rehabilitation facilities or even jail.
Co-worker 1: Stop walking towards the front door so fast.
Co-worker 2: Huh?
Co-worker 1: I want to soak in as much sunlight as I can before we return to Fluorescent Hell.