Do people ever climb the demon towers? Like, for any reason?" Aline looked up. "Climb the demon towers?" She laughed. "No, no one ever does that. It's totally illegal, for one thing, and besides, why would you want to?" Aline, Isabelle thought, did not have much imagination. She herself could think of lots of reasons why someone might want to climb the demon towers, if only to spit gum down on passerbys below.
Cassandra Clare (2010). “City of Glass”, p.223, Simon and Schuster