Rooftop views lure visitors up to this showstopping entertaining space. Treetop-level windows line the front of the room, and greenroof terraces open off either side, bringing the outside in. Throughout, sculptural furnishings and accessories contribute to the gallery-like atmosphere.

One side of the room is devoted to lounge space, piled high with soft floor cushions. The other, shown above, contains a table and wine bar. With the exception of ceiling-mounted speakers for music, the room is intentionally free of media technology. Elements like the following help foster conviviality:

• In addition to storage for dozens of bottles, the wine bar features a refrigerator, dishwasher, and cappuccino maker--everything you might need for a gathering of friends.
• The wine bar countertop is topped with Paperstone, a rock-hard compressed paper that is made of 80 to 85 percent recycled material. "It's similar to a solid surface like Corian and just as easy to maintain," Nemeckay says.
• Sliding glass doors offer easy access to the greenroofs. Closed, the doors maximize views. When the weather allows, they can be opened to catch cooling breezes, helping to reduce energy costs.
• "Design as much as possible with the environment in mind," Fredman says. Even small details like the wine barrel top tray--an old material given new use, shown at the far right--speak to the home's green sensibility and the room's function. Sidebar: This room is ready for fun pursuits--a card game, a wine tasting, or curling up with a good book.

Bright Idea: Space for solitude is a must in any home, regardless of its size. The greenroofs that open off the penthouse offer contemplative spaces with seating for just one or two. "The wild planting palette--native grasses, ornamental onions, and coneflowers--contrasts with the Zen feeling of the interior space," Burcheri says. "This is not a space for 30 people. It's just for you."

Paint: Sherwin-Williams, Eggshell, Mega Greige; Flooring: Robbins Hardwood Floors, Artesian Classics, Walnut Natural; Sconces, Wine Bar Cabinetry: Terrell Goeke, Merchandise Mart; Countertop: PaperStone; Faucet: Kohler Merchandise Mart, Forté; Sink: Kohler Merchandise Mart, Poise; Major Appliances: Jenn-Air; Built-in Coffee Maker: Miele; Wine: Juicy Wine Company; Barstools, Tall Upholstered Chair: Susan Fredman & Associates; Game Table, Chairs, African Day Bed, Throw, Rug, and Benches: Primitive; Window Treatments: Primo Interiors; Woven Shades: Roseland Draperies; Accessories: Susan Fredman's At Home With Nature