This monolithic hotel in the Meatpacking District has a cool garden, a hot nightclub (the Boom Boom Room), a trendy restaurant (the Standard Grill) and now a rooftop bar, Le Bain, with a view of the Hudson River and the High Line park, one of Manhattan's newer attractions, built on an old elevated railroad line.

Drink up: Beat the heat with light, fruit-filled cocktails, such as a raspberry Collins or pineapple punch, and an order of chilled watermelon or cherries. 848 Washington St.; (212) 645-4646,

Rare View, Fashion 26

Opened: July

The mini-Manhattan "chainlet" Rare is known for its burgers, but this 22nd-floor rooftop bar is doing only cocktails, with views of the Empire State Building and the neon glow of Times Square. The space is designed to look like a tree house, with a cedar bar and high-top cedar tables, as well as plenty of greenery.

Drink up: DJs will start spinning tunes on weekends later this summer. 152 W. 26th St.; (212) 858-5888,

Private Rooftop & Garden, Gramercy Park Hotel

Opened: 2007 (but even plenty of locals think it's only for guests)

Even though it's called the Private Rooftop, you can still visit this 16th-floor lounge for a drink and dinner. All you have to do is call the front desk and make a reservation, so the host on the roof has your name. But be forewarned: It's often closed for events that are, well, private. Like a swank hotel lobby on a roof, the lounge has curtains, plush leather club chairs, trellises strung with vines and a spectacular chandelier. There's also a fireplace and cashmere throws for when the night air gets crisp.

Drink up: In April, the rooftop started serving dishes from Maialino, Danny Meyer's hot new restaurant in the Gramercy Park lobby. Look for the same crab cakes and tamarind-flavored lamb chops you'd get downstairs. 2 Lexington Ave.; (212) 920-3300,

Salon De Ning, the Peninsula

Opened: May 2008

After decades of being known as a fairly lackluster bar with great views, this rooftop was renovated two years ago and now has a Shanghai-influenced style that befits the glam view of Central Park up Fifth Avenue — and the $22 drinks. The 23rd-floor lounge is reached by a separate elevator.

Drink up: Join the after-work crowd for a litchi-flavored Ning Sling cocktail, or come Sundays for the DJ-fueled three-course brunch. 700 Fifth Ave.; (212) 903-3923;

Plunge Bar & Lounge, Gansevoort Park

Opening: Expected to open July 26

Hotel Gansevoort, the Meatpacking District fave that opened in 2004, has spawned hotels in Miami, the Turks and Caicos and, later this summer, a Park Avenue location. Until that much-awaited, three-level rooftop bar opens, the rooftop Plunge Bar at the Hotel Gansevoort remains a hot spot, with tables and Hudson River views. Start the night with mango-lime rickeys or grapefruit Cosmos and sliders or wings from its eclectic menu.

Drink up: A young party scene heats up on weekends, which can be good or bad depending on your point of view. 18 9th Ave.; (212) 206-6700, The same can be expected at the hotel's Park Avenue location when it opens. 420 Park Ave. South; (212) 206-6700;

Mad46, the Roosevelt

Opened: 2008

An exterior elevator at Madison Avenue and 46th Street takes you to the Roosevelt Hotel's 19th-floor rooftop bar. Once there, you'll find an extensive cocktail list, appetizers and small plates, umbrella-topped tables and curtained-off daybeds (for guests who reserve them for bottle service). The bar opened in 2008, but it was renovated in 2009, when an interior lounge and retractable canopies were added, so now you can get half-price drinks on rainy days. Make a reservation, and you'll get a guaranteed table and the right to jump the line, which can be long even on a Wednesday night.

Drink up: Come on a Wednesday night for the house mojitos and movies under the

stars. 45 E. 45th St.; (212) 885-6095,