Maps
The Empire
Empire Overview (Woodcut)
Empire Overview
Empire Detailed
Imperial Nations
The Brass Coast
Dawn
Highguard
League
The Marches
Navarr
Urizen
Varushka
Wintermark
The Barbarians
Otkodov
The Barrens
The Wider World
Outside the Empire
Tactical Maps
Coloured Territories
Regions with Keywords
Maps by Daisy Abbott.
The Gazetteer tells you all about the places on the map while the Pronunciation guide tells you how they're said.
Map Viewers
Alongside the above, you can take a look at Nicholas Avenell's wonderful zoomable Google version of the Empire Map.
Also, Racheet Dave has now produced a cool dynamic map so you can study the Empire territory by territory.