Windows can make your basement more visually pleasing and boost safety. Large basement windows, sometimes known as "egress windows," from Pella of Westerly are made to let more light into underground rooms than the older, smaller, rectangular windows that are put above ground. They also offer a way to get out in case of an emergency.
The main differentiator between basement, or egress, windows and standard windows is that basement windows must be made for an average-sized person to get out in order to meet safety requirements set up in building codes. You are able to pick from correctly sized casement, sliding or double-hung windows when you put in basement windows. Make sure you totally understand local building codes before you purchase basement windows.