I like your sense of colour and the frame around the building.
As a terrible nitpick (This does not help or hinder game use)
For me it has a believability problem that makes it look modern. There is a very reasonable layout of rooms but I can't picture how they would fit into any building that had internal beams or something sorta like medieval construction.
What would the building look like on the outside? Are there Windows?
You might put a column or two into the longest open spans. Maybe include a stone texture or something. I think that would make it seem more probable without harming your design too much.
Again this is a nitpick. Its a very usable map - so many gods so few temples.