Powerful words describe Chartres Cathedral, the medieval pilgrimage destination near Paris: magnificent, yes; profound, deeply so; mystical, beyond most sacred sites. Yet Chartres is also dark and daring to one’s spirit, radical and complex. Above ground are the two weird spires, a stained glass window of Isis and Horus, sculptures depicting rejected liturgy, eccentric architecture and the fabled labyrinth. Why is the church oriented more to midsummer sunrise than to Jerusalem? The crypt reveals Roman walls, early frescoes, a Druid well and a replacement Black Madonna. Since pre-Christian times, this unusual site has been sacred. Let's unfold the mysteries together.