Frank Sinatra entertained in the most populous city in Nevada.
Frank Sinatra . Sinatra 's professional career had stalled by the early 1950s , and he turned to Las Vegas , where he became one of its best known performers as part of the Rat Pack . Using his Las Vegas shows as a home base , he toured both within the United States and internationally until a short time before his death in 1998 . Las Vegas ( [ lɑːs_ˈveɪɡəs ] , Spanish for `` The Meadows '' ) , officially the City of Las Vegas and often known simply as Vegas , is the 28th-most populated city in the United States , the most populated city in the state of Nevada , and the county seat of Clark County .