Below are some bookstores in my area, or that have been fun to visit:
Moscow, Idaho
BookPeople of Moscow https://www.bookpeopleofmoscow.com/
Pullman, Washington
Brused Books http://personal.palouse.net/brused/
Juneau, Alaska
Hearthside Books https://www.hearthsidebooks.com/
Rainy Retreat Books https://juneaubooks.com/
Sitka, Alaska
Old Harbor Books https://www.oldharborbooks.net/
Portland, Oregon
Powell’s Books https://www.powells.com/
Seattle, Washington
Elliot Bay Book Company https://www.elliottbaybook.com/
Spokane, Washington
Auntie’s Bookstore https://www.auntiesbooks.com/
Walla Walla, Washington
Book and Game Company http://www.bookandgame.com/
Bonner’s Ferry, Idaho
Bonner’s Books https://www.facebook.com/pages/Bonners-Books/
Kelowna, British Columbia, Canada
Mosaic Books https://www.mosaicbooks.ca/
Zwolle, Netherlands
Waanders In de Broeren https://www.libris.nl/waanders
And, of course, any Friends of the Library bookstore or book-sale is worth the stop.