... all around the town. The New York Times has a Literary Map of Manhattan (this comes, once again, from Broad Street Irregular Maxine Clarke).
Philly could do one of these, too. Poe's house is right around the corner from The Inquirer building. The bar that Charles Bukowski used for Barfly is up the street (Bukowski lived around the corner for a while, too, and did some time in the prison formerly located on the site of a supermarket not far from where I live.) Owen Wister, the man who gave us the phrase "When you call me that, smile," grew up here. I could go on - and on - but won't.