The Fortress of Light hangs above the Lake Roccaluce, in non-space (nobody knows where it is exactly) on a huge rocky mountain and immersed in the clouds. You can only reach it by traveling through the dimensions and you need to be very well versed in magic to do that. The temple is stately and imposing and has magnificent exterior walls. There is a purification cell inside for those who have committed serious crimes. The "cell" is more purifying and redemptive than punitive. When the person reaches the right spiritual level, they may cross the threshold without encountering any obstacles as long as they no longer pose a threat.