Lighting is one of the most powerful tools in interior design. It can change the feel of a room with the right lighting fixtures, as well as create moods and atmosphere. Well planned and properly placed lighting can emphasize certain architectural features or display artwork while providing functional, practical illumination for those living there. Lighting can be divided into two main categories: ambient lighting and task lighting. Ambient lighting is the overall light level in a room, which can be supplied by sources such as ceilings, walls, and lamps. It helps to create a comfortable living space, as well as defining activity areas. Task lighting is more focused, and serves specific purposes such as reading or cooking. This type of lighting is important in a room as it allows specific tasks to be done with ease. The types of lighting used in a room should be selected according to its size and purpose. Lighting should be chosen that compliments the design of the home, providing illumination that is not too bright or too dull. Accent lighting can be used to highlight certain features of a room, such as artwork or a fireplace. Natural light should never be ignored as it is a great source of illumination, with many benefits to health and wellbeing. Lighting can be a tricky subject with many elements to consider in order to create a beautiful atmosphere. Through careful consideration about the types and placement of lighting, experienced interior designers can transform a room into something special.