I wonder if there is a website somewhere listing ordinary sites that actually double as nuclear shelters. For instance, I remember walking through the undergrou

I wonder if there is a website somewhere listing ordinary sites that actually double as nuclear shelters. For instance, I remember walking through the underground parking underneath Helsinki’s Kämppi shopping center, and noticing that there were huge blast doors, which were kept out of the way and made to seem unobtrusive, but could clearly be closed in some emergency.