Ethan Schussler built his first tree house at 12 years old. His tree house in Sandpoint, Idaho, sits 30 feet above the ground and can be accessed by an "elevator" consisting of a bicycle that, when pedaled, ascends a pulley system to the top.

Airstream’s Flying Cloud 30FB Office travel trailer includes a designated workspace in the back corner.

The design team restored the existing wood beams, giving nod to the home’s former rustic life, while introducing big windows, white walls, and clean lines.

Bay Point Landing offers cabin and Airstream accommodations, RV sites, a communal clubhouse, an indoor saltwater pool, an event hall, a private beach—and plenty of open spaces for surfing, whale watching, crabbing, fishing, or hiking.

The upper floor of one of the cabins features a wood-burning stove, beanbag chairs, and a hanging paper lantern.

The backyard evokes the serenity of a Japanese Zen garden with a beautiful leaning tree and a shou sugi ban shed.

Milan saw the launch of wrong.london, an offshoot of HAY that's run by creative director Sebastian Wrong. The lighting-focused division released these veneered-oak lampshades, dubbed 30degree, among other designs.

by Schacht Aslani Architects

A monumental German climate map enlivens the dining area, which also sports CH 23 & CH 30 chairs by Hans Wegner.

A ribbon-like spiral staircase leads from the open-plan living area to the second level, where the bedrooms are located.

Terreo Studio aimed to make this seven-unit apartment complex look “unrecognizable, so it stays a mystery from the outside.” From the white stone facades, through the interior marble and complimentary soft palette of the furnishings, to the open floor plan that meanders between courtyards, the architects took cues from Grecian architecture: Natural materials are used in abundance to create a structure that embraces the environment.

ESCAPE Tampa Bay Village is currently comprised of ten tiny homes situated on individual lots. Due to popular demand, the village will soon expand with an additional 30 units.

The renovation revealed a 30-foot-deep well beneath the bedroom, which the team half-jokingly considered turning into a fish tank. Instead, they opted for a simple bedroom with plenty of built-in storage.

30E Design transformed a hallway in a Boston brownstone from a “dumping ground for all the plumbing and utilities with an existing metal ductwork laundry chute” into a modern space that houses the laundry, furnace, and boiler.

Another ITEM contribution: a fist-shaped candle from Brazil, said to bring good luck ($30).

The couple are avid readers; a hallway of shelving is now home to their ample book collection. “As we walk by, we catch a glimpse of something we haven’t read in 30 years… or never have read at all,” says Donna.

Deep yellows can warm up any space. PPG Pittsburgh Paints' Wright Mustard (FLLW321) and Glidden’s Wheat Stalk (30YY 52/515) are two paint colors that complement contemporary midcentury-inspired interiors.

Each home that Wright designed was unique to its circumstances, and the Penfield House was no exception. Set on 30 acres in Lake County, Ohio, the 1950 home has taller ceilings and an elongated profile to accommodate the client Louis Penfield—who was six foot eight.

In Kathryn Tyler’s finished home, a palette of wood, concrete, and painted brick forms a neutral backdrop for vintage treasures, including a $30 dining table, $3 poster, and a set of 1950s Carl Jacobs Jason chairs she snagged on eBay for $400.

For a cost-conscious 2,000-square-foot renovation located 30 minutes outside of Austin, Texas, architect Nick Deaver took a look around for inspiration. He spied galvanized metal cladding on the region’s sheds and co-opted the inexpensive, resilient material for his own design.

The DIY open shelves cost just $30.

Built in 1957, this home was saved and dismantled at its original location in Illinois and relocated to its current location in Acme, Pennsylvania—only 30 minutes from the iconic Fallingwater. The Duncan House shares the 100-acre Polymath Park with three other homes for rent, designed by Wright’s apprentices.

The stair tower is 10 feet wide by 30 feet tall.

The house was fabricated at a facility 30 minutes away and then assembled on-site.

The new addition is in perfect harmony with the barn erected over 30 years ago.

The new stairs replace a narrow set that was only 30 inches wide. The couple packed storage underneath.

Square Bamboo Plates, $30; Bamboo Nesting Bowls, $34; Fluted Bamboo Cups, 22

From his home in New Westminster, the commute to Randy's new office takes just 30 seconds.

See Through - All My Things /white/, 2004, C-type Print, 30" x 36". By Helga Steppan

The wide plywood stairs have a built-in bookcase. Behind the stairs is a 5 x 30-foot corridor to store his bigger paintings.

The walls flare out at 30-degree angles, which creates more space for counters and seating inside the cabin.

A Haiku L Series ceiling fan and Stuv 30 Rotating Fireplace are ready for warm or cold weather.

Resident Manon van der Zwaal’s home exemplifies the open design and natural materials common to all 30 structures.

In the large central courtyard, a heritage pecan tree rises above the roofline, and a 10-by-30-foot pool is set into the ipe wood deck.