From a summer solstice event at the library yesterday. The architecture was designed with the solstice in mind, such that the sun will shine down the walls from about 15 minutes before and after solar noon. The light travels from one side of the room to the other, acting as a sort of sun dial. The circular windows on the ceiling create sun spots in the room.
I really had no idea what to expect but it was pretty neat, and I took the opportunity to finally get a library card…