Golden ages

[Matthew]

What all triggers golden ages? I've gotten them from building wonders, but was under the impression that a golden age was also triggered by the first victory of a special unit. Does this not?

Also, is there a limit on the number of golden ages a civ can have?

[Sevorak]

A golden age is automatically triggered by a civ-specific unit victory, unless you've already had a golden age.

Yes, there is a limit. One.

-Sev

[Blaupanzer]

Minor correction. Golden Age is triggered by the victory of an elite civ-specific unit over a non-barbarian opponent or the building of a Wonder/Wonder combination fulfilling both unique civ characteristics (e.g., industrious, religious, etc.). The total number of Golden Ages per civ is indeed one.