In Utah there is a different kind of Sun Room
There is a large stone structure called the Hoveneep Castle, and there is a tower room
At sunset on the solstices and equinoxes, the sun rays enter the room through small holes and light up the doorways of the inside walls
It has been determined by Ray Willamson, an archaeoastronomer, that this light show was not produced by mere chance, but deliberate building by ancient people