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The Observatory Sun Valley, A Viceroy Resort
Ketchum, Idaho, United States · Viceroy · Core Luxury · Opening soon
The Observatory Sun Valley, a Viceroy resort, is due to open in 2026 at the corner of Main Street and River Street East in downtown Ketchum, with a rooftop observatory looking into the Central Idaho Dark Sky Reserve, the first reserve of its kind in the United States. It will have 73 guest rooms and 12 single-level penthouse residences, a full-service spa and an indoor thermal pool, a short ride from the Sun Valley ski slopes.
- 73 rooms
- Opened 2026
- Neighborhood: Downtown
- Not open yet
About The Observatory Sun Valley, A Viceroy Resort
- The project was first announced as The Harriman, a Viceroy Resort, before taking its astronomy-themed name.
- The Central Idaho Dark Sky Reserve was the first International Dark Sky Reserve designated in the United States.
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