Maat is the Goddess of Truth and Justice who personifies cosmic order and harmony as established by the Creator God at the beginning of time. Her symbol is an ostrich feather. Judges were regarded as priests of Maat. In the hall of judgement at the weighing of the heart, the heart of the deceased was placed on the scales of justice, balanced against the feather of Maat, symbol of justice.
Skull Cathedral in Otranto. In 1480AD, Muslim invaders martyred 800 residents of the town of Otranto, Italy. Their remains were taken to the cathedral and the bones were arranged behind the altar as testament to their faith. To some, it may look morbid; to me it's beautiful.