Throughout the story, it became temporary or permanent home for a growing number of goddesses, among them Urd and Skuld. One interesting thing about the Temple is that in all of the continuities so far, we've never seen the inside of the temple (other than the individual rooms). We don't know what specific kind of temple it is, what ceremonies are performed, or other things. Also, despite being run by a monk formerly in the manga and TV Series, we don't even know why people don't still visit for their religious rites or offerings! This is a question that may never be answered, but perhaps we need to suspend our disbelief.