Shopping There are plenty of places to shop on the beautiful Mississippi Gulf Coast! From Bay Books and Serious Bread in Bay St Louis to places like the Arts and Crafts Fair along Hwy 90, Coastal90 can point you in the right direction! Come back often!!! Celebrate Waldo in Old Town Bay St Louis in July! Posted on July 24, 2013 by Bay Books is local Bay St Louis small bookstore. Posted on July 3, 2013 by Comments comments