Las Vegas Nevada. There are few places outside London, Tokyo, and New York when it comes to A-list entertainers and big-budget stage shows. Seasonal casino residencies by the megastars of the music world range from pop divas like Lady Gaga, Christina Aguilera, Gwen Stefani, and Cardi B. To dad rockers Journey and Aerosmith, to the superstar DJs of the dance music universe. Top that with seven enthralling Cirque du Soleil shows, the mesmerizing Blue Man Group, and magicians Penn & Teller.