I've never been to Las Vegas but I love it in concept because it sounds so made up. Imagine if you were reading a fantasy novel and they were like "smack in the middle of a deadly inhospitable desert there is a glittering city of indulgence and lawlessness and cheap sin that has specifically engineered itself to obfuscate your sense of time and keep you there as long as possible while they take all your valuables." You'd be like yeah that's some wizard shit.
Check out the 1994 “The Stand” miniseries or read the book by Stephen King. It explores the idea of the main bad guys and their leader, who is essentially the devil, taking up residence in Las Vegas.