International Serra Retreat is at Christ the King’s Retreat House in Buffalo, MN. Bishop Michael Izen is the presenter. Friday, November 17 - Sunday, November 19, 2023. November 17th Check-in/registration 4:00 - 8:00 p.m. Retreat begins at 8:00 p.m.; through Sunday, November 19th at 1:00 p.m.