A Fane is a temple, a shrine, a church, a cathedral, or generally any place dedicated as a holy place.
A Fane is typically dedicated to a faith, or belief in a god. Pilgrims and other travelers may come to your Fane to worship, or to rest on their journey.
While within the Fane, you gain a number of benefits.
You gain a +2 bonus to Religion and Obscura skill checks.
You gain a +4 bonus to any skill check regarding the faith or deity the Fane is dedicated to.