This was a real life for the military personnel fighting World War Two. Incredible memorabilia of war time events and Churchill’s rise (and many falls) from power. Gets very hot underground and there are limited places to sit, bring water. Ask the guide guestions, they have a great deal of information to make your visit that much more enjoyable! This took about two hours and much of that was standing. The multimedia system was great, but the crowds made it difficult to get a clear view of many of the exhibits. To be expected, it’s a must do.