This map plots the settings and references in The Hitchhiker's Guide to the Galaxy

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The West Country
the west country
GNU Free Documentation Licensethe west country

Even more specifically, the story begins in the West Country, the quiet, rural part of south-western England where Arthur Dent lives. Later in the series it is mentioned that Arthur Dent bought his towel in Salisbury, so it is fair to assume he lived near there.

 

A view over a West Country landscape
Creative Commons AttributionA view over a West Country landscape - Credit: me'nthedogs