>>7946155googling "dead malls" will bring up a bunch of stuff and there are bunch of Youtube documenters who can touch it in finer detail, but:
In the United States malls boomed in the 50's and 60's with the post war growth: Freeways, cars, and money to spend made "destination" retail venues quite attractive, a big mall situated right could attract weekly traffic from nearby affluent suburbs and be monthly to yearly visit for a much wider region.
But combinations of shifting populations, demographic evolution, and the expansion of retail chains to more remote locations started starving many of them in 80's and 90's, then like
>>7943926said, some died fast with dignity, others took decades to die.