Wiki about Las Vegas:
"Established in 1905, Las Vegas officially became a city in 1911. With the growth that followed, at the close of the century Las Vegas was the most populous American city founded in the 20th century (a distinction held by Chicago in the 19th century). The city's tolerance for various forms of adult entertainment earned it the title of Sin City, and this image has made Las Vegas a popular setting for films and television programs. Outdoor lighting displays are everywhere on the Las Vegas Strip and are seen elsewhere in the city as well. As seen from space, the Las Vegas metropolitan area is the brightest on Earth..." ...Link here...
City of Angels is the most famous entertainment city in whole world. They use to called him "capital entertainment city of world", because of his Casinos. Do you like "Mirage" or rather "MGM Grand", maybe "Monte Carlo" or you wanna try your luck in "Fourqueens". It's up to you. I dont have to say, visit this city, just look these awesome pictures and make a judgment.
Travel guide over Las Vegas you can find on Google, typing Las Vegas toursm, there is a lot of them. Choose the cheapest, my advice.
City of Vegas, pictures: