Mission San Buenaventura is reportedly haunted by a Spanish-speaking monk and is associated with unexplained phenomena like whispers, cold spots, and sudden temperature drops. While often described as a ghostly monk who only appears to Catholics, other reports include the sound of a woman sobbing and unexplained events like lights turning on and off. A Spanish-speaking monk is said to haunt the mission and its grounds, with some accounts suggesting the apparition only appears to Catholics. Some individuals report hearing a woman sobbing in the middle of the night. There are claims of sudden drops in temperature or intense nightmares being experienced by visitors. Reports include lights turning on and off by themselves. Mission San Buenaventura was founded in 1792 by Father Junipero Serra and continues to operate as a parish church today. It has faced significant challenges throughout its history, including a major earthquake in 1812 that necessitated reconstruction.