Hotel Del Coronado, San Diego
Since 1888, “The Del” has been coastal catnip for A-listers who demand glamour with their ocean view. Rudolph Valentino and Gloria Swanson filmed on the beach. Marilyn Monroe, Bette Davis, Judy Garland, Joan Crawford, Doris Day, and Groucho Marx were also frequent guests, and even Liberace was discovered while tickling the hotel ivories in 1950. Thanks to a $13 million overhaul, this national historic landmark is now equipped with 21st-century amenities, even trendy workouts like Mermaid Fitness. To amp up the luxury quotient, book a beach villa.