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.

The view!

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 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.

In this glass-enclosed master bedroom, a LC4 armchair faces the master bed. The moveable frame adjusts along the base, allowing the sitter to switch from upright to full recline, or lounge at a number of other sitting angles.

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.

Sited on a cramped corner lot in Manhattan Beach, California, this midcentury bungalow was renovated and enlarged with a 1,000-square-foot addition to create a total of 1,986 square feet of functional space for owners Alison and Jeff Goad and their three children. Culver City–based practice Edward Ogosta Architecture demolished and remodeled parts of the existing house to include a larger master bedroom and a new bedroom, bathroom, and powder room. The project also included updates to the two existing bedrooms, the laundry room, and garage.

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.

The Kelleys furnished the cottage with help from Suzanne’s daughter Betsy Burbank of Betsy Burbank Interiors. Classic modernist icons, such as a Saarinen Womb chair for Knoll, a Herman Miller Eames lounge chair, and an Eileen Grey E1027 side table look at home alongside present-day pieces such as an Encore sofa (which handily folds down into a sleeping surface) from Room & Board and a Doka rug designed and produced by Stephanie Odegard. The Wohlert pendant lights from Louis Poulsen were designed by Vilhelm Wohlert in 1959, but grouped as such, they appear distinctly contemporary.

"Shane enjoys both cooking and entertaining so we maximized the counter space to make meal prep and hosting easy," Priftaj says. "It was also very important that the kitchen include a gas grill so he could quickly and conveniently grill without having to climb up five flights of stairs to use the bbq on the patio." Priftaj selected high-gloss acrylic white cabinets from bulthaup's b3 line with an aluminum backsplash and b3 prism drawer system to keep things tidy. A Wolf hood and gas cooktop with chargrill give Carslake the flexibility he desired for indoor grilling. The counters are polished white quartz.

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.

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.

The exterior of Connect 4L 1,600 sf 3 bed 3 bath 2 story modern prefab.

The green roof, wood cladding, and low profile help to integrate the home with its lush, natural surroundings.

Built entirely from teak harvested on-site, this breezy solar-powered home in Santa Teresa, Costa Rica, ticks all the right boxes for a pair of avid environmentalists who love surfing.

A curving skylight illuminates the minimalist kitchen of a dwelling in Bondi Beach, Australia, that was renovated by Andrew Burges Architects.

Multiple Hytte cabins can be clustered together to create a village layout.

The Lais designed their house to be theirs forever. As such, they were able to make design moves that made sense for themselves but that wouldn't have high resale value, like the Japanese-style master bathroom in the middle of the second floor instead of off of the master bedroom. The traditional setup features bath stools from Muji for washing off.

The built-in bench that borders the cantilevered bed features two storage drawers and a hatch that accesses an additional storage compartment.

The crisp white kitchen features appliances built into the cabinetry and marble countertops.

San Francisco’s modernists were faced with the issue of building within a firmly established stylistic tradition—think bay windows and gingerbread. Henry Hill’s 1947 renovation of a 1908 Victorian tucked away on an alley in historic Russian Hill provides a remarkable response to the dilemma.

The kitchen and convertible desk area of the Kugelschiff display a luminous, white-painted ceiling and walls, and white ash cabinetry and flooring.

For architect Stephen Chung, the design of his Wayland, Massachusetts, home was all about blending into the natural environment. The first floor is a serene composition of white and wood. The demand for a domestic office space inspired him to build up, adding a second floor for him to "experiment." In a departure from the Cape Cod aesthetic that rules his block, he was able to give the addition a modernist take, while also literally reflecting the existing landscape of the neighborhood. The entire 1,100-square-foot adjunct that encompasses his second story office-studio, master suite, and fort for his two young sons is swathed in mirrored siding and plate-glass windows.

The playroom later became Xenia’s office.

The dwelling is raised on three marine-grade, aluminum-alloy flotation tubes, each with five sealed compartments for extra safety.

Mike Kurokawa and Paul Fishman set out for the beach from their house in the Puna region of Hawaii. A bridge leads from street level to the upper floor of the house, which is situated in a natural depression, or kipuka.