Dark by design
Bortle Class 2 skies, 18 mins from Great Sand Dunes National Park
Colorado’s first DarkSky Approved Lodging property · approved April 2026 · Bortle Class 2 sky
Choose your night
$750
Per villa, per night, taxes included. Sleeps 4 to 6, with a 10-inch Dobsonian telescope and a private indoor jacuzzi.
View DatesView villa$129
Per adult, $79 per child, taxes included. Astronomer-led and open to visitors and villa guests. Full refund or a new date if clouds cancel.
Reserve a tour$495
Per session, for up to 6 guests. Your own astronomer, at your villa. For villa guests.
Reserve your eveningThe sky
Kosmos sits under some of the darkest skies in the U.S. In April 2026 it became Colorado’s first DarkSky Approved Lodging property, an approval for how the whole property is lit, so the sky stays dark for everyone under it.
The Bortle scale
Wild sky
Suburban
City
Kosmos is Class 2, the second darkest rating on the scale. Class 1 is the darkest sky on Earth; Class 9 is an inner-city sky.
The Kosmos experience
You arrive in daylight. Everything after that is built around the sky — including the buildings.
Check in, lose the road behind you, and watch the Sangre de Cristos turn gold from your villa.
Every villa has its own telescope. Set it up outside before the last light goes.
An astronomer walks you through what is overhead — planets, nebulae, and in season the core of the Milky Way.
Soak in the private indoor jacuzzi, then fall asleep inside the dome with the sky still overhead.
A self-sufficient retreat on 40 acres, bordered on the east and north by roughly 700 acres of conservation land restricted to sustainable use.
Villas built with sustainable hemplime and geodesic domes that open the room to the sky.
DarkSky Approved lighting keeps the property dark, so the stars stay bright for the whole valley.
Guests say
The atmosphere is very peaceful. The villa, with its dome and skylight, was an inspiring place to spend time… We enjoyed the hot tub, stargazing with the telescope provided. I will definitely go back!
Even though the resort is in Phase 1 of development and operating completely 100% off-grid… What we loved most was the spectacular openness, absolute privacy, beautiful dark skies, and the gorgeous villas themselves.
This is a stargazer's dream! The houses were built with a very thoughtful design that made me think I was staying on another planet… Seeing the night sky without any light pollution is not something that I'd ever experienced.
Planned for you
Book your villa, then tell us what the trip is for. We plan the details, including your day at the Great Sand Dunes, and send you one plan.
Sixty minutes in the privacy of your villa, arranged before you arrive.
A curated dinner at your villa. Priced per item.
Prepared in your villa for an anniversary, a birthday or a proposal. Priced per item.
The Dark Sky Journal
What the moon does to the sky, and how to pick your dates.
Read the guide
The national park after dark, 18 minutes from Kosmos.
Read the guide
The scenic drive into the San Luis Valley.
Read the guide
What to do by day, before the sky takes over.
Explore the valley
Before you book
Yes — 100% off-grid. The Pre-Arrival Guide explains what that means for your stay.
The bright core is up from roughly March to October, best on moonless nights. Under a Bortle Class 2 sky the stars are there year-round.
About 18 minutes by car to the park entrance. Alamosa is about 25 minutes.
Yes. Astronomer-led tours are open to visitors. The Stargazing Tour is $129 per adult and $79 per child, taxes included.
Per villa, per night: $750, taxes included. Sleeps 4 to 6, depending on the villa.
Getting here
Wild mustangs roam the valley beneath the snowcapped Sangre de Cristo Mountains, and the nearest town lights are far enough away to keep the sky dark.
