Comment by Animats

I'd been to the War Rooms decades ago, when they were simply a WWII restoration. It was an obscure grim bunker where important decisions had been made during the worst period in 20th century British history. I remember a small electric bell at an exit with a small sign "Immediate danger above if ringing". Just a warning not to go outside during bombings.

Apparently it's been gentrified to the point of ridiculousness.