Which finger does a wedding ring go on?

A wedding ring goes on the finger closest to the pinky on the left hand. One legend says that the Romans originated this tradition, as they believed a vein went from the ring finger to the heart.

Another legend says it's a Christian tradition, as the priest would touch a finger each for the "Father, Son and Holy Ghost," ending on the ring finger. Other, more pragmatic explanations say the ring is worn on that finger because the ring finger provides more area for a ring to be displayed, but it is less used than other fingers; therefore, the ring does not become as worn.