Links to websites that have helped me most on my travels:
Europlan – The bible . it has photos from more grounds globally than anywhere else:
https://www.europlan-online.de/
Peter Miles – The Itinerant Football Watcher
Some great blogs and some great pics across many years from an original groundhopper who I’ve been fortunate to travel with including to places like Yerevan and Tbilisi:
https://peterrmiles.wordpress.com/
Steve Broughton – Steve B Groundhopper
A very frequent blogger who does an incredible variety of grounds and so helpfully, puts map coords on each blog he posts: