The owner of Camel's Toe Hotel in Las Venturas realized there was a lot of competition out there and decided to attract customers from afar as they came into town. He installed a spotlight on the roof of his hotel, which is now visible from afar. This gives the impression that there is something interesting going on there.
This beam is a permanent attribute of the Luxor Hotel, located in Las Vegas.
The spotlight perfectly complements the atmosphere of the city and transforms it. If you are looking to improve your game, be sure to check out this mod.