Bookstore recommendations

I’m looking for unique bookstores for a few books that I would like to buy locally if possible. Two are philosophy books, Ideas from Edmund Husserl and Staring at the sun from Irvin Yalom. The other book is a hardcover of Dune from Frank Herbert. Any ideas on good book stores to buy books and possibly hang out at in the valley would be appreciated.

Edit: Thank you everyone for your book store recommendations, I will visit each store in the near future.