Yes. On the front page of the wiki, hover over the Fallout 3 flyout menu, the 7th option down is 'Places'. This will give you an alphabetized list of not only the map marked locations but also all the unmarked areas as well. The next option down on the flyout is the map, which also lists all the locations. At the bottom of the map page, in the external links section, are links to interactive maps to help find places based on items or vice versa.