Las Vegas is known for its activities.
Las Vegas . The city bills itself as The Entertainment Capital of the World , and is famous for its mega casino -- hotels and associated activities . The city 's tolerance for numerous forms of adult entertainment earned it the title of Sin City , and has made Las Vegas a popular setting for literature , films , television programs , and music videos . There are many sports activities in the Las Vegas metropolitan area , most of which actually take place in unincorporated communities within the metropolitan area .