In November 2019, the Union Pacific Big Boy stopped at Kansas City's Union Station during its western continental tour.

Northbound Union Pacific Big Boy, near Garnett, Kansas

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UP Big Boy at KC Union Station

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Locationscout.net has two links to Smoky Mountain landscape locations. If you subscribe (which is free), you can get directions and other information about the sites from the amateur photographer who took the photos. Link 1: https://www.locationscout.net/locations/1760-great-smoky-mountains/spots
Link 2: https://www.locationscout.net/locations/1761-smoky-mountains/spots

I respectfully suggest that you go to www.locationscout.net and enter "Washington State" in the search bar. Locationscout.net is a free site that is run by a guy out of Germany for amateur photographers to post landscape photos from around the world. If you register (which is also free), you will have access to the directions and information that the photographer posts for that particular landscape location (parking, how crowded it is, etc.).

Here is a link to the search for Washington State on the site: https://www.locationscout.net/locations/312-washington-state

Good luck!