This classroom is rectangular and high-ceilinged, with thick stone walls and tall stained-glass windows that depict centaurs, goblins, muggles, mermaids, and other non-wizarding creatures and peoples. When the sun shines through, the colourful figures spill across the floor in shifting patches of light, giving many students at least one thing to look forward to in this class. Rows of sturdy wooden desks face a wide blackboard framed in carved oak, its surface dusted perpetually with chalk. The floor is paved in worn flagstones, smoothed by generations of students, and echoes carry easily when lessons grow dull. Some students seem to be labouring under the illusion that this classroom is their second bedroom.