It is a place for retreat and prayer for various cults, mainly Catholic. Account a legend that St. Martín de Tours offered half of his cloak to a leper to Harbor him in his youth, and that that night Jesus appeared to recognize him his good work, and that led him to convert to Christianity. Its short coat (a ' Chapel') became relic, and placed in military tents and rooms of Palace where you could pray, which by Synecdoche gave the name to these and all other oratorical rooms. See be in Chapel, Chapel burning.
