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.

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.

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.

Danny envisioned the space between the ADU and the house as an informal place to gather. "It creates a sort of courtyard sensibility, which works for our intergenerational family dynamics."

The concrete-and-steel home by Faulkner Architects gives one family a refined escape in the mountains of Northern California.

Danny fitted the kitchen into an alcove outfitted with Ikea cabinets and Semihandmade fronts. The refrigerator is by LG. On the jute rug from Armadillo, chairs from Threshold join a table from Inside Weather.

In the new living room, the floors are covered in pine wood with a Bona Craft Oil finish in Frost, and the walls and ceiling are coated in lime plaster, Mortex by Beal. The handmade hanging chair, made of plaster, is a favorite spot for the couple’s cat, Paka.

After: At the master bathroom's bathtub, the architect turned an existing water feature into a planter.

In the primary bedroom, built-in storage is ship-like and not particularly plentiful. “I’d rather live in 850-square-feet by the ocean and see the sunrise every morning than in 3,000-square-feet in the suburbs,” Caleb says.

The island of Møn in Denmark has a remarkable landscape with dramatic white-chalk cliffs, so it’s fitting that Birkedal—a vacation rental property not far from the beach—features a shape and form that matches its impressive locale.

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!

Tom Givone's current weekend abode, nicknamed the Floating Farmhouse, is—so far—his capstone project, a synthesis of personal taste, material experimentation, and historically sensitive restoration: a living laboratory for how to bring the vernacular past into the present.

Overhead cabinets now can be easily swung open for ease of access. The kitchens are priced at IKEA’s usual retails. A 10 by 10 foot kitchen fitted with Sektion cabinets will range from around $1,300 to $2,200, excluding appliances.

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.

Black and white kitchen tiles add visual interest to this stunning modern kitchen by IKEA.

A tiny outbuilding offers a cozy living space inside a simple shell.

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.

As the facade of a Bates Masi-designed home in Water Mill, New York, rises from eight to 14 feet high, the mahogany planks subtly widen. “It was quite a demand to make of the contractor,” architect Paul Masi says. “But the design was so much about traveling through the site and weaving [the house] together with the deck.”

Fed up with flashy, environmentally insensitive beach homes, architect Gerald Parsonson and his wife, Kate, designed a humble hideaway nestled behind sand dunes along the New Zealand coastline. Crafted in the image of a modest Kiwi bach, their 1,670-square-foot retreat consists of a group of small buildings clad in black-stained pine weatherboards and fiber-cement sheets.

The family spends summers and school vacations at the bach. New Zealand's relatively mild winters mean they use the house year-round.

Tanya Wexler and Amy Zimmerman linger in the breezeway designed to draw eyes, and footsteps, from the driveway through the house to the gently sloping backyard and swimming pool beyond.

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

“A building can have far greater impact than the space it stands in.”—William Carpenter, architect and resident

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

Kayak in hand, Tom and Will make a break for the beach.

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."

New zoning allowed for a zero-lot-line structure, but required a public storefront, which Carpenter uses as an art gallery.

A view across the display island to a breezeway betweent the house and the garage that Pacek and Roynon created as part of their home addition. They use the space for entertaining and food service when the weather cooperates.

A Lakeside Prefab in New Jersey A New Zealand expat and her son use their prefabricated lakeside New Jersey retreat as an outdoorsy counterpoint to city life. Photo by: Mark Mahaney Curious on what was popular last week? Click here!

IKEA chairs join a table from CB2; a Kawneer triple-sliding door opens to the family’s new ipe deck.

The Irwin pool house designed by Landis Gores in 1957 boasts a central room with high ceilings and an unobstructed view of the landscape. In 2005, the Town of New Canaan purchased the property and added exhibition spaces, as well as rooms for lectures and events. The small pavilion also houses an oversized, monumental brick fireplace design that divides the main space from the kitchen area.

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.