Inside Spain's haunting Holy Week celebrations

The week leading up to Easter is an incredibly important one for the religious in Spain. Holy Week or Semana Santa, commemorates the last week of Jesus Christ's life. Various brotherhoods -- some dating back to the Middle Ages, march through the streets somberly wearing head to toe coverings to remain anonymity.

At first glance the procession looks scary -- resembling the America's terrifying Ku-Klux-Klan, but the marchers are peaceful with their traditions being deeply rooted.

Click through the gallery above to see photographs chronicling the special week.