"La Posadas" is a delightful and unique Mexican tradition. Beginning Dec. 16th, it commemorates the cold, difficult journey of Mary and Joseph from Nazareth to Bethlehem. Each night after dark, the "Posada" (procession) is led by two children dressed as angels. Adults carry long, lighted candles and sing as they approach the door of a designated house. They chant a traditional song and plead for lodging, until they are jubilantly welcomed. They share songs, prayer and festive foods. On the last night, Dec. 24, the festivities are followed by a midnight mass.