By Entering each Shrine, one character will be allowed to donate money and get a Stat increase in return. You cannot increase a Stat past the character's racial maximum, so don't try. The Shrine of Wisdom is in the northeastern part of Ambrosia. To reach it, Unlock the door northeast of the entrance, then follow the wooded path to the north and Unlock a second door. Follow the path south until you find a clearing with the Shrine.