[Dreami]

Do you have a link to that YouTube series? Could be interesting for when I've nothing else to do.

[einr]

Very likely it is the Dead Mall Series by Dan Bell:

https://www.youtube.com/playlist?list=PLNz4Un92pGNxQ9vNgmnCx...

[gallerdude]

yeah this is the one I was thinking of

[mr337]

Bright Sun Films has a few abandoned malls

https://www.youtube.com/playlist?list=PLejUkwZ-XJX_BKt3prjes...

[Rumudiez]

I think OP is referring to the Dead Mall Series by Dan Bell: https://youtu.be/mOlffr73fuM

[seem_2211]

Possibly Retail Archaeology? https://www.youtube.com/watch?v=N3UMWK4vutQ