Treasury on the Plaza is a historic bank building converted into a luxury wedding ballroom venue with large marble columns and an actual bank vault opened as the bar! I Know Right!? Sounds amazing and it is! Conveniently located at the center of Historic downtown St. Augustine, the Treasury on the Plaza is a perfect wedding venue for couples who are looking for an elegant event with plenty of room. Check the pics below, Treasury on the Plaza Wedding Photo Booth by Sunnyside Photobooth!