Pagoda :/ Always frustrates me when someone gets it a turn before me
Burial tomb
I'm with you here.
If not burial tomb, then just the temple and UU counterparts in general.
They don't cost faith you likely need to spend on missionaries, they can give +2 happiness, +1 food, or +2 culture from religion, and they can give +1 faith from policies.
That's a really good religious building!