I remember reading in “My Weekly Reader” when I was around 5th grade (1957) about the lost city of Ankgor Wat. It fascinated me that such a huge ruin could be lost in the jungle.
Of course I suspect it wasn’t lost at all but it did make for an interesting story.
It was the subject of my first-ever history essay. I was just 12. but the images I saw of the ruins still haunt my memories.