Visit the original underground bunker that served as Britain’s secret wartime headquarters during the Second World War. Preserved almost exactly as it was left in 1945, you can walk through the narrow corridors and see the Cabinet Room, where Winston Churchill and his ministers met to make crucial decisions. Maps still line the walls of the Map Room, covered with pins and notes tracking troop movements across Europe. There are simple bedrooms used by staff, a tiny kitchen, and even Churchill’s private room, complete with his desk and personal items.