At 18:57 hours on 26 May 1940, the signal was received to start Operation Dynamo - the evacuation of the British Expeditionary Force and French troops from Dunkirk's beaches on the northern coast of France. The network of underground tunnels beneath Dover Castle became the nerve centre of the whole operation. The best estimate was that only 45,000 of the troops could be brought back, yet Winston Churchill announced to the House of Commons on 4 June that 338,000 troops had been saved, despite the operation itself coming under attack.Today, you can experience life as it was lived by the 700 personnel based here in the worst days of the World War II. Relive the drama as a wounded pilot is taken into the underground hospital to fight for his life and see the Command Centre that Churchill visited to see the plans that helped lead to Allied victory.
The White Cliffs are among England's most celebrated sights, yet hidden inside them is a fascinating and secret world. Deep underground lies an extensive network of tunnels - first dug during the Napoleonic Wars, but so strategically useful that they continued to be used right through the 20th century.
There has been a castle at Dover since the defences of an Anglo-Saxon fortress were strengthened by William of Normandy, who built the first earthwork castle in 1066 before moving on to London. Under Henry II, the castle was rebuilt, including the monumental keep - constructed in the 1180s by Henry's great architect, Maurice the Engineer - which stands at the heart of a concentric ring of defences.