Atlantikwall links :
Krigsturst in Danish
War Tourist in English
Batteries Du Cotentin
Der Atlantikwall in Frankreich
Atlantikwall.net
Bunkersite.com
Bunker Walks
Der Atlantikwall
Bunkers on the Cotentin
Zandvoort in Dutch
atlantikwall-research-norway
Bunkerpuctures.nl
Bunkers du Pas de Calais
www.atlantikwall.org.uk
Le Mur De L'Atlantique
Werkgroep Moderne Fortification
Bunker Art
Landemer
DAWAA
'Batterie Todt'
Musee de Mur de Atlantique Battrie Todt
The Atlantic wall at the Belgian Coast
Musee de la Resistance Bretonne
STP Sten
The Fortress of Le Havre
L'Ile d'Oleron
Luftschutz-Bunker.de
Jersey's bunkers
Alaska well not Atlantic but still worth a look
Festung Saint Malo
JUIN 1944 UN VENT DE LIBERTE AUX NETS DOR
After The Battle
Channel Island Occupation Society Guernsey
Channel Island Occupation Society Jersey
Bunkerspecht
Festungsstadt Coln
WW2 Sites
Hitler's Atlantikwall
Führerhauptquartier, Soissons dans l’Aisne, Picardie.
Atlantikwall Denmark
Deep Darkness a very interesting underground site.

Bunker Construction :
The Regelbau Concept

Brittany
Battle Field Brest Remembered"Inventaire général de Bretagne (Région Bretagne)"

V1/V2
Voyage Au Pays Des V1 V1 sites
in Normandy

LES SITES V1
du Nord de la France

Radar :
Gyges a site covering Denmark
large bunkers and Radar sites etc.
German Radar
A World War II Radar Station

W.W.1. :
Alpine Fronts & Swiss Fortifications

Products :

All-Brite Clieaning Ltd

Blogs :
The site takes a look at the Drew surname

POW's :
Tunnel Harry about the three tunnels at Stalag Luft III. Very good.