I was doing a 4-month internship a few years ago and was looking to remotely rent an apartment, which is the ideal opportunity to be scammed. As I was searching info about a possible unit, I found a YouTube video of someone showing the building's elevator. The video even had a dedication in the description. I was also surprised about this, so I entered this guy's ytb channel and it was filled with videos of other buildings' elevators in that and neighboring cities.

That's how I discovered this community. It's always amusing to find out new niches some group of people care about, you can find the most amazing (and unexpected) things.