A fantastic used book store in the Inner Richmond district of San Francisco. It's a bit out of the way for the typical tourist, but it's also well worth a visit, in part because of the excellent selection of books, and in part because Green Apple also happens to be on one of the city's most vibrant (and under-appreciated) retail districts.
Book lovers take over the town of Deventer every August in the province of Overijssel in the Netherlands.
Probably the largest new and used book store in the world, Powells is a book lovers paradise. With 3 floors and 7 different rooms, the city of books requires a map to find your way around.
A great book store in the Los Feliz area of LA. The have a massive selection of oddball design books, hot rod decoration books, pin up girl collections, and fashion books.