This long-time West Coast resident has a soft spot for the Quad Cities, which this year alone have hosted concerts by Paul McCartney, Steely Dan, James Taylor and Bonnie Raitt, among others. The Quad Cities boast the Quad Cities Symphony, Opera Quad Cities, Ballet Quad Cities and the annual Bix Beiderbecke Memorial Jazz Festival. Broadway Across America produces about a half dozen shows each year in the Quad Cities, which also offer several community playhouses.
Sports attractions include the John Deere Classic PGA stop, the Quad City Steamwheelers indoor football club, the Quad City Storm hockey club and next week's Quad Cities Marathon*. Three casinos call the Quad Cities home.
To top it off, the Quad Cities have my favorite minor league ballpark of all time:
https://www.10best.com/awards/travel/best-minor-league-ballpark/
* I ran the Quad Cities Marathon in 2013 and last year ran the QCM 5K, both when I was back in the area for a high school reunion