Every god has their own domain, and on the inside, their own temple. Temples are typically in the exact middle of the domain, regardless of how big it may be.
Temples can be of any shape, but the inside structure is usually the same in terms of architecture. The door is an open arch, with pillars lining the inside walls. There is a platform in the middle with a statue (which is slightly larger then the temples god) positioned slightly back from the middle of the platform to leave room for gifts. There is a walkway leading to the platform, and walkways lining the walls on the inside near the pillars.
Between the walkways and the platform is a pool (sometimes called an 'epitome'), containing the gods magic. This pool can contain any material and is based on the gods purpose. In the case of 'ascended gods', aka gods who have had a previous life, their magic pool is filled with something relating to their death. For example, Ex's (who originally died in a fire) pool is filled with liquid fire. Not lava, but actual liquid fire.
Domains by extension is a personalized habitat for the god and their angels. These places can contain anything, usually relating to a gods purpose. A domain may get larger or start out smaller depending on the amount of angels within and/or the purpose of the domain. Angels typically have free reign within their own gods domain, but there may be stricter rules if an angel visits a different gods domain. These rules are set and decided by both gods as some may have rivalries and conflicts with each other which can affect their angels views on one another and ther access to the other gods domain.