This room is filled with beautiful, dancing, diamond-sparkling light. Clocks can be found on every surface, "large and small, grandfather and carriage, hanging in spaces between the bookcases or standing on desks ranging the length of the room, so that a busy, relentless ticking fill[s] the place like thousands of minuscule, marching footsteps (OP34)." A huge crystal bell jar stands at the far end of the room, and it is from this that the sparkling light comes. The bell jar stands on a desk and appears to be full of a billowing, glittering wind. Inside the jar, rising and falling on the glittering current, a tiny object moves through an endless loop. The object is a small humingbird, but it isn't always a bird. At the bottom of its circuit, the bird is within its egg. As it rises, it hatches and grows into a mature bird by the time it reaches the apex of its path. On the way back down, it becomes a fledgling bird and then reenters its egg, which reforms around it. This progression of time repeats over and over within the jar. A large glass-fronted case stands against a wall within which many Time-Turners of various sizes rest on shelves.
The path through this room, toward the bell jar, is a narrow passage between the many desks. At the far end, where the Time-Turners are located, is another door which pushes to open.