Growing up in the mountains, I remember seeing a curious kind of antenna up on a mountain nearby. It didn't look like the others; from one angle it looked like a three-petal flower and across town, it looked like a giant robot with two antennae. Wondered what it was for years since it looked so unusual. Only a few years ago I learned it was a long-decommissioned AT&T Long Lines tower: an urban explorer had filmed it.

https://youtube.com/watch?v=MvXxNheLATw