I know it may sound weird, but I have always had a fascination with abandoned buildings, in particular with ones built in the last few decades. There's something about seeing a gigantic modern structure – a shopping centre, a hotel, an apartment complex – which no doubt had thousands go through them every day, just sit there idle slowly falling into disrepair and nature taking back. I see abandoned buildings in the same way marine archaeoligists may see a sunken vessel: like a window to another time that you can experience. Fascinating stuff.
Anyway I was doing some research into the Kowloon Walled City in Hong Kong for Episode 70 of the Rubenerd Show and came across this mysterious site: all it has is the word "Colors" (American spelling), the phrase "Gunkanjima Index Vol One", and stacks of thumbnails.
Check it out if you're into this sort of thing, it's pretty fascinating: