Lighting is one of the most important elements of a physical environment. Good lighting can improve work efficiency, reduce stress in everyday life, and create an atmosphere of relaxation and comfort. Since the invention of artificial lighting, various forms of lighting have been developed. Incandescent bulbs, halogen lamps, fluorescent tubes, and other emerging technologies like LED light are among the most commonly used lighting fixtures. Incandescent bulbs are a cost-effective option but due to their low efficiency they are being replaced by LEDs, which are much brighter, more energy efficient and longer lasting. LEDs are also being used in many different types of simple and complex lighting systems for interior and exterior applications. The choice of lighting for a space should not be taken lightly since it can have a profound impact on our moods and wellbeing. When choosing lighting, one should consider the purpose of the space, such as the availability of natural light, the size of the space, the type of activities that will be taking place and the desired lighting atmosphere. The intensity of the lighting should also be taken into account, as too little or too much lighting can have an adverse effect on our eyes and mental state. When considering outdoor lighting, it is important to take into account the security of the premises, as well as the aesthetics. The lighting should be strong enough to ensure visibility and safety but not so bright that it distracts. It should also provide enough light for the activities that will be taking place outdoors. Lighting is an integral part of the physical environment. The right kind of lighting can drastically improve a persons experience of any kind of physical space, while the wrong kind of lighting can have a negative effect. Careful consideration should be taken when choosing lighting fixtures and designs, in order to maximize the experience of any space.