Fantastic piece of history about Churchill’s secret war rooms during World War II. We spent 1:20 inside, though could spend a little more if read everything and listen to the full audio guide. The museum in the middle had lots of great information about his life from birth to death, including good signage and personal objects from his life - including military uniforms, hats, and his Nobel prize in literature. The other half of the war rooms are seeing the World War II rooms - including where he worked and slept, cabinet room, and the amazing map room.
We prebooked tickets though not certain it was needed for the time we went.
Decent cafe about 2/3 of the way through - it’s small and the seating just ok but more drink, food, and snack options than expected.
Note: Lighting is a bit lower throughout, both from being in the lower ground level without windows and also given the lower overhead lighting.
Shop at the end has interesting books and items.
Toilets are adequate and only near the entrance/exit.