Fountain...Maybe this building could be various things, but basically be a place where a player could somehow get common cards or creatures. Fountain could be the
version of it, while for
it might be some kinda nature park.
A giant bonfire or torch.
A graveyard or tomb.
Ritual circle? Not so sure on this one.
Some kind of clocktower(cue Castlevania music)
gym.
Nest or Airfield type place.
A large mirror/reflective surface that doesn't quite properly reflect what you see...
Something chaotic and permanent somehow.
Statue.
Some kind of 'decoy' building, like a mansion that's actually a bar, or something of that nature...
Perhaps Temples could have a different function depending on the element of the city. Like,
Temples can cast Crystallize, while
Temples can give cities a slow but free 'growth' and so on and so forth. It should probably be things that skills can't do. Another idea is that what ever Temples do, they do better when multiple players come together to do, so for example:
's temple can delay people from coming out of the Spirit World, 1 person delays for 1 day, while 2 people delay for 3 days and so on and so forth.