A Sister of Mercy kneeling at the Communion railing in the Sacred Heart Chapel at Mount St. Mary's. Built in the late 1880s, the convent would accommodate as many as 182 professed sisters, novices, and postulants affiliated with the Sisters of Mercy. The chapel features a broad, tiled center aisle, with pews on either side facing each other for antiphonal chanting. The sanctuary is a study in symmetry, with Gothic-arched stained-glass windows and arched passageways on either side of the altar. The abundance of polished white marble and/or granite shows that the Sisters spared no expense in creating an atmosphere of reverence for generations to come. Photo #1. Undated.