Purple thistles, California poppies, clover, and dandelions have all taken root in the roughly 10-inch-deep, lightweight humus and grape-husk soil in this 580-square-foot green roof. Designer Peter Liang says that he "wanted to plant a green roof for its thermal mass, but I wanted it to be as natural as possible."

Suzanne and Brooks Kelley at the back of their 1,100-square-foot guest cottage.

Dan Pacek, left, and John Roynon prepare cocktails at their 12-foot “display island” in the renovated kitchen of their home in New Jersey. The couple bought handles matching those on their Thermador refrigerator and used them on a set of pantry doors, one of which conceals the steps to the basement.

The owners toured this home, which surrounds a mature tipu tipu tree, while visiting relatives for the day. The brick is original to the 1947 construction.

In the 2EM lounge, light fare like duck confit cassoulet and flatbread with lamb, blue cheese, and caramelized pears is served. Beacon-based vendor Niche Modern crafted the chandelier above the bar, and the stools come from Rexhill. A major philosophy of the Roundhouse is “keep it local.” Photo by Eric Laignel.

Sliding doors by Quantum were made to look like the original panes that couldn't be saved, and they lead to a fire pit outside.

At the top of the stairwell, a sitting area is outfitted with a vintage Eames lounge, a large Jack Goldstein painting, and a 1970s light fixture found by Marcovitz in Paris.

The view!

The kitchen features a concrete island topped with marble. Deja-Vu stools by Naoto Fukasawa surround the island. A print by Guy Gormley, as well as a painting bought during holiday in St. Tropez, hang on the walls.

This modern bar in Oaxaca is named Expendio Tradición, meaning “dispensing tradition,” a concept designer Ezequiel Farca utilized to create a space that’s seeped in the Chagoya family’s 140-year-old tradition, producing mezcal. Materials such as recycled mezcal barrels, traditional black clay tiles, and handmade cement floor tiles, which generated local work and economic sustainability, are featured throughout the space.

A wall-mounted oak bar is where Siminovich and Kerner drop their keys, pound away on their laptops, and occasionally eat a quick meal with Matilda, their two-year-old daughter.

A 12-foot “display island” gives this kitchen programmatic function—food and drinks are prepared here; cooking and cleaning are consigned to the back—and helps make it a welcoming space, whether homeowners Pacek and Roynon are entertaining or simply enjoying time to themselves. The soft green hue adds an inviting touch.

The Jorgensen's Menlo Park home is a model of green design with features that are smart for everyone to consider. "Every project is different, but there are some universal things that will apply from project to project," says Feldman about designing a green home. "The first—and most obvious thing—is to always try to build less, to have a smaller house and be smart about how the rooms are designed and oriented so that you can get by with less space. Smart design will lead to a smaller building, but it won't feel smaller."

Bookmatched wood veneer cabinetry brings a warm, tactile feel to the interiors.

Take a look at some of the most exciting, sustainable buildings around the world, and you may notice something they have in common: green roofs, or rooftops covered with a thin layer of soil to allow for grasses and other low-lying plants to grow.

New Depths Inspired by a local winery, George Kyprianou wanted a glass top on his subterranean wine cellar. The interior is lit, casting soft light into the living space at night and revealing the 132-year-old stone foundation. The three-quarter-inch glass lid sits flush with the floorboards; it opens with an ingenious device that Kyprianou devised using a 12-volt air compressor and a remote-controlled switch. When you push the button, the glass lifts just enough to be removed by hand.

Light Box Peter created a simple uplight at the top of the wood box by wiring together energy-efficient fluorescent fixtures typically used under cabinets and countertops. “The cheaper magnetic models hum unacceptably loudly, so make sure you get the electronic ballast types,” he warns. He then painted the cavity white to reflect light and covered them with quarter-inch-thick acrylic from TAP Plastics. homedepot.com tapplastics.com

The view of Kapiti Island is fully revealed from the tower.

Rian and Melissa Jorgensen's 2 Bar House in Menlo Park boasts all the usual green design suspects: energy-efficient lighting, good insulation, renewable material finishes, radiant heat, and the roof is pre-wired for future PV panels. Executed by Feldman Architecture, the house requires only natural lighting during the day which keeps energy costs way down. Still, the most stunning aspect of the green design is the living roof planted with succulents, aloe, viviums, and ice plants. "I'm absolutely glad that we did it," says Melissa. "It turned out so well and I really enjoy sitting up there and taking advantage of it as much as I can. It's very peaceful." Read more about this total remodel here.

The kitchen takes on a gallery feel. “I’ve got art on the kitchen counter. I really want to say to people, ‘Don’t take art so seriously,’” says Montague.

Connected to the kitchen by a flight of stairs, the bar features cohesive custom fittings and furniture by Eginstill. Each living area flows freely into the next, in effort to “make the space as open as possible, just like it used to be when it was a sugar refinery” says van Hulzen. “We wanted to [return] the building to its old glory.”

The countertops in the kitchen are a mix of quartz surfaces and custom and salvaged stainless steel. "We use the kitchen all of the time, it turned out really nice," says Melissa. "It's very open, certainly one of the central focuses of the house, and is fun for entertaining."

The living room, dining room and kitchen are in one open space. The flooring is bamboo. The cabinetry is a mix of bamboo, walnut, and maple, and was fabricated by City Cabinetmakers out of San Francisco.

Alameda's centerpiece is a circular bar with a poured-concrete top. The bar, flooring, and light fixtures are among the custom elements of the space.

In the dining room, antique wooden busts and a machiche cross designed by Farca are arranged on a resin countertop by Monica Calderon. The bar conceals a service area with an espresso machine.

The top container contains Wardell's office—and a "napping nook" above that.

In the dining area, a one-of-a-kind table with a reclaimed Carrara marble top by NET—themultidisciplinary design firm of architect Alejandro Sticotti, with whom Nicolas works—is surrounded by prototypes of the company’s Board chair. The family dog, China, sits on a floor made of travertine tiles.

Black was a natural choice when it came to updating an already existing wet bar. The brass shelf was laser-cut from thick brass sheet--designed with a simple geometry as a nod to a classic bar.

The architects added a small circular skylight to serve as a vertical focal point in the center of the fifth floor. The quarter-sawn white oak risers produce a beautiful rippled grain highlighted by the abundant natural light.

Villa Slow houses two bedrooms that allow for various arrangements—the rental can be set up for couples, families, friends, etc. Each room also comes with its own bathroom.

A custom steel dining table with a walnut insert is surrounded by Eames Molded Plastic side chairs; the hanging fixture is from Tech Lighting.

The backsplash is a tarnished sheet of bronze. Raft Stools by Norm Architects provide understated seating.

With a removable tray top, wheels for easy transportation, and a wine rack, this bar cart from Shop Horne is sure to stand by all season to be the most helpful accessory for your summer parties.

A built-in cabinet with textured glass doors provides storage for extra glassware or supplies for entertaining. The furniture piece is a unique conversation starter in the dining room.