By the time I got the tech to build the Hermetic Sanctuary the Ice God faction had already built it. I've only just started to conquer their territory and much to my surprise I found it built in a city closest to my lands, the old Dervellio (sp?) capital is to the South East. If I had raised the city would I have then been able to build the HS myself? And is there any way one can get the tech and build it before the enemy does?