The "Earthship" style of architecture — which involves building homes using natural and repurposed materials, clean energy, water harvesting and other environmentally friendly measures — was developed by architect Michael Reynolds, a proponent of "radically sustainable living," in the late 20th century to early 21st century. Earthship homes were originally designed to withstand the New Mexico desert's extreme temperatures, and the style has since spread to off-grid communities all over the world.

Developed as an alternative to the resource-intensive and fossil fuel-hungry properties that most of us live in, Earthships can be seen as a kind of utopian housing — homes that don't require killing things in order for us to live. From some of Reynolds's own creations to an off-the-grid Airbnb, here are some of the coolest Earthship homes listed online.

Tres Piedras, New Mexico — $900,000

Located in New Mexico's Tres Piedras, within the San Juan Range of the Rocky Mountains, this striking little house is called the "Atlantis Earthship." It's a fully sustainable, off-the-grid, solar-powered home built by Michael Reynolds, which comes with a greenhouse and sits on three acres of land overlooking a "mini gorge."

[Image credit: Zillow]

Taos, New Mexico — $825,000

Another one of Michael Reynolds's Earthship creations, this sizeable home in Taos, New Mexico, comes complete with a 1,000-square-foot food-producing garden (with and aquaponic system and koi pond), a Japanese floating cedar deck, a panoramic barrel sauna and views of the Taos mountains.

Like the Atlantis Earthship, the house, named "Vallecitos," is fully sustainable and off-the-grid.

[Image credit: Zillow]

Santa Fe, New Mexico — $3,574,000

Inspired by Reynolds's work, this impressive earthship-style property in Sante Fe boasts eight kiva fireplaces, a music studio, a Japanese cedar hot tub, a Koi pond, a sauna and more across two separate houses. Unlike Reynolds's rather modestly priced home, however, "The Desert Flower" is listed for more than $3.5 million.

Taos, New Mexico

If you're keen to try the off-the-grid life, but don't have hundreds of thousands of dollars to buy an Earthship home, we've got some good news: this one's listed on Airbnb and costs around $1,400 a week. That's right, you can sample the Earthship experience by staying in this eco-friendly desert house that was, according to the listing, built by the owner himself.

[Image credit: Airbnb]