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.

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.

Lightroom 1.0, a photography studio, is a freestanding structure on the property. “Together, they represent an autobiography of my career,” Carpenter says.

Both the sitting and standing versions of DESK 01, a collaboration between Artifox and IdeaPaint, are outfitted with dry erase surfaces for recording sudden bursts of creativity.

For PS 234 in Manhattan's Tribeca neighborhood, Macrae-Gibson designed a colorful walkway to connect the main school building to a modern addition designed by the firm in 2008. The walkway, adjacent to a play yard, protects students and teachers from the elements as they move from one area to another.

The red steel-framed structure is lined with perforated metal panels in a variety of colors.

Style: "#1"

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 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.

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 yellow North Face tent looms over the top of the main building.

Yvette, Adrian, and their son Julian survey the view from the top-floor terrace. “I’ve never been fond of modernism—I find it cold,” Adrian admits. “But having this house, I have to say, it’s growing on me.”

Still, it’s possible to remove or relocate non-structural walls in a home with good bones.

The master bedroom occupies a private space on the top floor.

A Nelson jewelry cabinet and Massimo Vignelli lamp.

Top 9 Kitchens of 2020: The nominees for this year’s Dwell Design Awards are the epitome of style and function.

The Piranesian view upwards through the central stair to the top floor skylight.

Integral glass counter and sink top

Lauren and Brittan Ellingson, the owners of Notice Snowboards, a custom snowboard and wakesurf company in Whitefish, Montana, approached Workaday Design and builder Mindful Designs to concoct a new lake home for their family. The brief was, perhaps unsurprisingly, focused on getting the family outdoors as much as possible.

Like the built-in bed, nightstands, headboard, and other custom furniture, the staircase leading to the open-air viewing platform was made by Versfeld. The Lektor desk lamps are by Rubn.

The Lofthouse is built one of the many hills separating it from the couple’s main residence. "Excavation was a challenge, as we wanted to maintain as much of the existing landscape as possible, but needed to clear out trees for the foundation," says Tarah.

The architects designed the home’s expansion with the knowledge that the owners plan to continue the renovation when their budget allows it. "We wanted to put everything in the right place so it doesn’t have to be undone later," says Corti.

Parota wood continues in the spacious kitchen. Marisa and Christopher found the blue tile that runs throughout the home on a trip to León, Mexico. "It called out to us," says Christopher. Festooned with small stars, its tone matches the color of the ocean perfectly.