The Curator of the Citadel

Severian has been next to a ladder. There is a person watching this picture of the moon landing up on this ladder. He had tried to ask the washer for directions before, and that's when these two armatures came around the corner. So as they walk away, this washer says, oh, so you're a torturer, huh? I've never been to your tower. I wonder what kind of paintings.