ELI5: Explain Like I'm 5

Skylight

A skylight is a window in the roof or ceiling that lets in natural light from outside. Skylight windows can make a room look brighter and more cheerful, and conserve energy. Sunlight that comes in through the skylight can help keep a room warm and provide natural light during the day so you don't have to have lights on. Skylights are a great way to let natural light into a space!