Hard Rock Hotel and Casino

Known for a (hard) rocking atmosphere, musical residencies that can’t be topped, and long-running summer Sunday pool party Rehab, HRH has been fine-tuning its people-watching opportunities ever since it opened. After a $750-million overhaul in 2010, it became an even better place to see guests, gawk at its $3 million in music memorabilia, and watch the acts that fill the 3,200 seats of The Joint.