Some friends and I started a multiplayer game and abandonned it after a while because most of us were going away. I remember struggling against the cultural value of my neighbour and, having found the saved game while doing some cleaning up, I took a peek.

His city had a temple producing 12 culture per turn! What on Earth could possibly cause that??
Looking around a few other cities, some of both his and mine (but not all) had doubled cultural outputs for some buildings and wonders, others didn't. I couldn't find a pattern there. But in any case, it doesn't explain the 12/turn on a temple... Anyone ever saw anything like that?

Sistine chapel and the temple being in his state religion and having been constructed over 1000 years ago would cause that...

As I don't recall exactly the cultural output of a temple I cannot say if the 12 points is right or not, likely right though.

The double cultural output is from that any culturebuilding that's been in place for 1000 years gets it's cultural value double.

[EDIT] Ah, too late, listen to Oyzar, he knows what he's talking about ;)

If he had the Sistine chapel, that gives an extra +5 culture per turn for the building. And if the temple had been built for over 1000 years the culture per turn is doubled so that would give 12 cpt {(1 base cpt for the temple +5 cpt for Sistine) X 2}. So you probably had some temples giving 6 cpt and some temples were giving 12 cpt.

Ah, I didn't know about the thousand year rule - that explains a lot. Thanks. And yes, he has the Sixtine Chapel.

Cheers for the answers - there's always something to learn with this game! ^_^

Slightly off-topic... but you'll grow to appreciate the 1000-year-rule when you play Incas. Yes, conquered granaries count even they never produced culture before.