Located at "someplace I do not know," Sanctus is more or less a city as it is a Pantheon. The literal host of all of the gods, this city provides worship to all of the known gods in the planes.
Despite the controversy this provides, each God or Goddess has a place in the city and are thus worshiped there. Either through luck or by divine intervention itself, the City stands untouched by the elements or war. The worshipers of the divine attribute this to the Gods themselves accepting that each one of them has a place in the scheme of all things.
Travelers, priests, warriors, merchants, anyone in the world travels to the city should they get the chance. It is the center of all things either holy or unholy, for one cannot exist without the other.
Except Rovagug or his equivalent. Nobody likes that guy.