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The Observatory in Winter

Luxury Hotel in Sun Valley, Idaho

Your Outpost in the Idaho Mountains

Step off the beaten path and discover an escape where moments of exhilaration and ease are in harmonious balance. The Observatory, A Viceroy Resort, is your sophisticated home base for one of the country’s most storied year-round mountain destinations, where each day and night is deeply attuned to the rhythms of Sun Valley and the stars above.

A Window to the Central Idaho Dark Sky Reserve

The Observatory is home to a professional-grade 17-inch PlaneWave telescope, offering a level of clarity and detail that is unmatched. As the centerpiece of our celestial programming, it anchors guided stargazing experiences, astrophotography workshops, and special events, creating unforgettable opportunities to connect with the wonders of the universe.

Rooftop Observatory
wellness

Wellness

The Big Wood River and high alpine meadows set a tranquil backdrop for recovery and rejuvenation in the expansive 5,000 sq ft spa at The Observatory. Let expert therapists, a thoughtful service menu, and beautifully-designed facilities including thermal pool, cold plunge, and steam room soothe muscles, restore energy, and reinvigorate both body and mind.

The Observatory Lounge

Gathering & Events

Idaho’s Sawtooth Mountains provide an inspiring backdrop for meetings, gatherings, and events in Ketchum. Designed to reflect the beauty of the Wood River Valley and the welcoming hospitality of the region, each space is imbued with natural elements and features elevated amenities along with professional planning to craft an unforgettable experience for guests and attendees.

wedding

Weddings

Say your vows under the expansive skies of Sun Valley and commit to a love as enduring as the stars above. From an intimate ceremony or elopement to a grand soirée, each moment of your celebration is crafted with the utmost care and framed by the striking beauty of the Sawtooth Mountains. 

A Historic Locale

Arrive at the gateway of world-class outdoor recreation, the charm of Ketchum, and vibrant arts and culture offerings that each invite you to slow down, breathe deeply, and embrace the mountain lifestyle.

The Observatory Sun Valley, A Viceroy Resort

Mountain Concierge

The mountains are waiting. Our dedicated Mountain Concierge provides insider access to the very best of Sun Valley, designing personalized adventures tailored to your interests. From guided hikes and fly fishing excursions to skiing, stargazing, and dining out, every itinerary is thoughtfully curated to help you experience Idaho's extraordinary landscape with ease. 

Connect with our Mountain Concierge to start planning an unforgettable Sun Valley experience.

Concierge

Exclusive Offers & Packages

First Light

First Light

A night sky with stars and galaxy

Linger Longer Under the Stars

A breakfast tray on a bed, with an egg sandwich and a coffeee

Mountain Mornings

The Observatory Residences

Experience refined mountain living in our residences, with vibrant downtown Ketchum at your doorstep and curated hotel amenities designed for effortless luxury.

residences