Opening Soon

The Observatory Sun Valley, a Viceroy Resort

Ketchum · Hotel

The Observatory Sun Valley, a Viceroy Resort (formerly The Harriman) is a new-build luxury hotel and residence in downtown Ketchum, Idaho, near the River Run base of Bald Mountain in Sun Valley.

Last verified Jul 7, 2026
5 months to delivery
78%
AnnouncedBreaking GroundConstructionOpening SoonNow Open
2026
Completion
73
Keys
12
Units
Scroll for details
The story so far
Announced May 14, 2025Viceroy announced its Sun Valley debut "The Harriman" (since rebranded The Observatory Sun Valley). HIGH.
businesswire.com
Coming soon
Expected opening Fall 2026
Milestones are dated to when they actually happened and linked to their source. This record fills in over time as TMW tracks the project.
About the project

The Observatory Sun Valley, a Viceroy Resort (formerly The Harriman) is a new-build luxury hotel and residence in downtown Ketchum, Idaho, near the River Run base of Bald Mountain in Sun Valley. Operated by Viceroy Hotels & Resorts, it pairs 73 guestrooms with 12 single-level penthouse residences, marking Sun Valley's first luxury hotel and for-sale residence offering. Amenities include a full-service spa, indoor thermal pool and cold plunge, a rooftop observatory, and a terrace bar named for Union Pacific chairman W. Averell Harriman, founder of Sun Valley Resort.

Common questions

Frequently asked

Where is The Observatory Sun Valley, a Viceroy Resort located?

The Observatory Sun Valley, a Viceroy Resort is located in Ketchum.

When will The Observatory Sun Valley, a Viceroy Resort open?

The Observatory Sun Valley, a Viceroy Resort is opening soon, with completion expected in Fall 2026.

How big is The Observatory Sun Valley, a Viceroy Resort?

The Observatory Sun Valley, a Viceroy Resort features 12 residences and 73 hotel keys.