Pas de Calais: was the centre of the most strongly defended part of Hitler's Atlantic Wall. The remains of the gun batteries that bombarded Dover are reminders of the scale and menace of Hitler’s Reich. 

Example one day itinerary.
:
09.00 Depart London

AM Travel to Calais via Euro Tunnel, with a picnic lunch en route.

14.00 (Local) Arrive Eperleque V2 Missile site

14.00-15.30 A guided tour of the site

16.00- 17.00 Visit a German battery that bombarded England-

17.30-18.00 Drive to Calais

18.00-20.30 Dinner in Calais

Return to the UK ETA 11.30 .