There are places that turn up in literature or in film--mystical and legendary places whose names may be familiar but about which we know little. We nod knowingly at the reference, but are often left wondering about places such as Atlantis, the lost land overwhelmed by the sea, or El Dorado, the fabulous city that vanished somewhere in the South American jungles. Other names are more evocative--Mount Olympus, the Garden of Eden, the mystic Isle of...