Jordy Meow has been one of my biggest inspirations for haikyo exploration. His book Abandoned Japan has been on my coffee table for years, and he is able to show the beauty of haikyo through his amazing photography. You can check out his elaborate blog here.
This guy has put so much time and effort into this and has even created an extensive map for haikyo around Japan. Whenever I feel I cannot explain well enough what the beauty of urban exploration is, I just reach for my coffee table. That usually conveys my point.