How does wonder victory work?

[Zorn]

So far, 2 games I have finnished ended with a wonder victory.
In the first, all wonders were build, most of them by me. Several turns later, when I captured the lighthouse, I had won. Fine.
In another game, I had build 18 wonders. After the construction of the UN, I lost. I was like WTH, why did I lose if had buildt 18 wonders?
And, if I lost - who has won?

 

[Pounder]

It is not a victory conditional, it is a game ending condition.

Who ever has the highest score when the last wonder is built is the winner.

I shut it of.

 

[Doc Tsiolkovski]

That one is really for special scenarios only (like the Mesopotamian conquest).
Aside from being 'odd' for regular games, it also isn't working properly: Not in any case, all wonders are available. Turn Off Diplo Victory, no UN; no Ivory (or none connected before Metallurgy), no SoZ; no rivers (most common, small archipelagos), no Hoover;...
And in that case, the Wonder Victory doesn't trigger (i.e. it cannot check if wonders are available at all).

 

[Lord Neil]

When all wonders are built the game end and the person with the highest score win so it isn`t actualy victory condition but a ending like when all die but one person game will end.

 

[Zorn]

Ok, that makes sense, and explaines why I lost.
Anyways, I disabled it now.
Thanks for clearing that up for me.