Las Vegas is known as the Entertainment Capital of the World, the Gambling Capital of the World and, for better or for worse, the Marriage Capital of the World. ; 855-234‑7469; donny.com“Fantasy”: Luxor, 3900 S. Las Vegas Blvd. ; 702-387-6366; neonmuseum.orgSwingers: Mandalay Bay, 3950 S. Las Vegas Blvd. ; 725-201-1422; swingers.clubThe Friends Experience: The One in Vegas: MGM Grand, 3799 S. Las Vegas Blvd. ; friendstheexperience.com/vegasTop of the World: The STRAT, 2000 S. Las Vegas Blvd.