El Castillo del Terror (2015) (Spanish for "The Tower of Terror") was a major professional wrestling event, the eleventh annual El Castillo del Terror event, produced by the International Wrestling Revolution Group (IWRG) that took place on November 1, 2015. IWRG has held their Castillo del Terror show since 2005, usually late in the year. As with the majority of the IWRG shows it took place at Arena Naucalpan in Naucalpan, State of Mexico, the home of IWRG. The main event was the eponymous Castillo del Terror Steel cage match where the last person eliminated would be forced to unmasked per the match stipulation. The 2015 Castillo del Terror match ended in controversial fashion as wrestler El Golpeador fell off the side of the cage to the floor, which according to the stipulation meant he