Nighttime is for stargazing. And at these new hot spots, you can do it indoors.

NEW YORK: The LOUNGE AT ELMO, recently opened beneath the popular Chelsea eatery, is a hip subterranean watering hole with a sexy, tropical atmosphere. Harrison Ford, Al Pacino, and Alicia Silverstone are among the stars who’ve aligned themselves at the bar. (212) 337-8000

LAS VEGAS: They’ve got more than spirits at GHOST BAR (pictured), the trendy lounge with a sky deck atop The Palms Casino Resort. They’ve also got a strong celebrity following, including Cuba Gooding Jr., Martin Lawrence, Tony Curtis, and David Schwimmer. (702) 938-2666, www.ghostbar.com

LOS ANGELES: At KOI, the city’s new sushi bar to the stars, the ambience is serene. And the clientele is cool. Very, very cool. Especially when Liv Tyler and George Clooney drop by. (310) 659-9449, www.koirestaurant.com