Skylights comes in various shapes and purposes, it could be mounted to provide sunlight, it could be operable for ventilation (Roof Window), and simply it could be fixed to give that elegant look, that could be achieved only when chosen and crafted correctly.
Skylights shapes: there are many shapes for skylights, such as Single pitch, Double pitch, Shed roof, Flat roof, M-Shaped roof, Butterfly roof, Combination roof, Segmented dome, Continuous dome, Dormer, Pyramid, Pyramid hip roof, Extended Pyramid.