Nearby, Leonardo stands sketching some of the puzzle mechanisms into his ever-present sketchbook. He realizes he's being spoken to, and more importantly about these very fascinating puzzles, and so he decides to answer. The excitement in his voice is very clear.

"It's difficult to say. There could be many reasons. A way to test their skills, or perhaps to keep out intruders, or maybe because they were very fond of puzzles to begin with."

He is, after all, so it stands to reason that these ancient ones could've been equally fond of them.