Well, I've never encountered a wind mill, so I'll have to go with "unusual buildings and strange architecture."  Here's the skinny house.  

I lived right around the corner from it when I was a kid, and it always fascinated me.  Someone has put stucco on it since then and added that front wall and something on the back, so it doesn't look as cool, in my opinion.  It's 10 feet wide and, according to this website, the skinniest house in the nation.

Maybe we can eventually make language a complete impediment to understanding. -Hobbes