I haven't lived there in over thirty years but I could spend hours looking at photos of old Dundee. The Victorian and Edwardian photos are the most fascinating but even those that date from when I was a kid are interesting.
I've a couple of good sites bookmarked at https://www.francisfrith.com/uk/dundee/photos and ttp://www.leisureandculturedundee.com/photopolis
I've just realised that Francis Frith covers most towns and cities, so I'll maybe spend some time looking at old Stirling next (https://www.francisfrith.com/uk/stirling/photos).