The Observatory, A Viceroy Resort Is Bringing a New Kind of Luxury to Sun Valley
First Look: The Observatory, A Viceroy Resort, Is Bringing a New Kind of Luxury to Sun Valley
A new chapter is taking shape in Ketchum, Idaho, where The Observatory, A Viceroy Resort is set to debut in Fall 2026 with an unusual signature: some of the most remarkable night-sky experiences in the country.
Set in downtown Ketchum, the new resort will combine Viceroy's approach to luxury hospitality with 73 guest rooms, 12 penthouse residences and an amenity collection that includes a full-service spa, fitness center, dipping pool and a rooftop observatory.
Image Credit: The Observatory, A Viceroy Resort
But it is the sky above the resort that promises to make The Observatory particularly distinctive.
Located within the Central Idaho Dark Sky Reserve, the nation's first Gold Tier reserve and one spanning more than 1,400 square miles, the property will give guests an opportunity to experience a remarkably protected night sky from the heart of Sun Valley.
A Rooftop Observatory Unlike Any Other
At the center of the resort's concept is an actual observatory housed within a 12-foot, 6-inch Ash Dome.
Inside will be a PlaneWave CDK17 telescope on a PlaneWave L-500 mount, accompanied by a wide-field refractor and an ultra-wide-field camera system. The combination is designed to allow guests to move between highly detailed views of planets and expansive views encompassing constellations and distant galaxies.
It is an ambitious addition to a luxury hotel—and one that makes the destination itself part of the experience.
Rather than treating astronomy as a passing activity, The Observatory will incorporate the night sky into its programming, giving guests different ways to explore what is overhead.
Looking Up in the Central Idaho Dark Sky Reserve
The location is central to the concept.
The Observatory will sit within the Central Idaho Dark Sky Reserve, a vast protected area recognized for its exceptionally dark skies. With more than 1,400 square miles of protected night sky, the reserve provides an unusually favorable setting for observing celestial objects.
For travelers visiting Sun Valley, that creates another dimension to the mountain destination. Days can be spent exploring Ketchum and the surrounding region, while evenings offer the opportunity to turn attention upward.
The resort's observatory is designed to make that experience accessible to both experienced astronomy enthusiasts and curious guests who simply want to see the night sky in a new way.
Guided Stargazing and Celestial Experiences
The programming will extend well beyond looking through a telescope.
Guests will be able to take part in guided telescope sessions and constellation talks, while private experiences will be led by local celestial photographer Travis Amick.
Programming will also be timed around major astronomical events, including meteor showers and planetary alignments, creating opportunities to experience particularly notable moments in the night sky from the resort.
The result is an experience that connects the technology of the observatory with the natural environment surrounding Sun Valley.
Image Credit: The Observatory, A Viceroy Resort
73 Guest Rooms and 12 Penthouse Residences
The Observatory will feature 73 guest rooms and 12 penthouse residences, giving the new property both traditional accommodations and larger residential-style options.
The resort is being conceived as more than simply a place to stay. Its combination of lodging, wellness, gathering spaces and astronomy programming is intended to create a destination where guests can spend time at the property while remaining closely connected to Ketchum.
The amenity lineup will include a full-service spa, fitness center and dipping pool, adding a wellness component to the experience.
And above it all will be the rooftop observatory—the feature that gives the resort its name and its clearest sense of place.
A New Community Hub in Downtown Ketchum
The Observatory is designed to appeal not only to overnight guests but also to the local community.
That community-facing approach is part of the property's broader vision as a place to connect, unwind and experience Sun Valley from an elevated perspective.
Its downtown Ketchum setting puts the resort within the destination itself rather than separating it from the community. The observatory, meanwhile, offers a reason to gather after dark, bringing together travelers and locals around something that has nothing to do with the usual resort routine.
A Different Way to Experience Sun Valley
Sun Valley has long been associated with mountains, outdoor adventure and a distinctive mountain-town lifestyle. The Observatory will add another layer to that identity when it opens in Fall 2026.
Its combination of Viceroy hospitality, luxury accommodations, wellness amenities and an unusually sophisticated astronomical program makes the resort feel designed around its location rather than simply placed within it.
Image Credit: The Observatory, A Viceroy Resort
The defining experience may ultimately be the simplest one: stepping onto the rooftop after dark, looking through the observatory's telescopes and seeing the Idaho sky with considerably more detail than the naked eye can reveal.
At The Observatory, A Viceroy Resort, the destination doesn't end when the sun goes down. That's when another part of Sun Valley begins.
Frequently Asked Questions
When will The Observatory, A Viceroy Resort open?
The Observatory, A Viceroy Resort is scheduled to debut in Fall 2026.
Where is The Observatory, A Viceroy Resort located?
The resort will be located in downtown Ketchum, Idaho, in the Sun Valley area.
How many rooms will The Observatory have?
The Observatory will feature 73 guest rooms and 12 penthouse residences.
What amenities will The Observatory offer?
The resort will feature a full-service spa, fitness center, dipping pool and rooftop observatory, along with its guest accommodations and programming.
What makes the observatory at The Observatory unique?
The rooftop observatory will be housed within a 12-foot, 6-inch Ash Dome and will feature a PlaneWave CDK17 telescope on a PlaneWave L-500 mount, as well as a wide-field refractor and ultra-wide-field camera system.
Where is the Central Idaho Dark Sky Reserve?
The resort is located within the Central Idaho Dark Sky Reserve, described in the announcement as the nation's first Gold Tier reserve, spanning more than 1,400 square miles.
Will guests be able to participate in astronomy experiences?
Yes. The resort will offer guided telescope sessions, constellation talks and private experiences led by local celestial photographer Travis Amick. Programming will also coincide with events such as meteor showers and planetary alignments.
Will The Observatory welcome local residents?
The resort is being designed as both a luxury retreat and a community hub, inviting guests and locals to connect and experience Sun Valley.
