St. Patrick's Cathedral is a Catholic cathedral in the Midtown Manhattan neighborhood of New York City. It is the seat of the Archbishop of New York as well as a parish church. The cathedral occupies a city block bounded by Fifth Avenue, Madison Avenue, 50th Street, and 51st Street, directly across from Rockefeller Center. Designed by James Renwick Jr., it is the largest Gothic Revival Catholic cathedral in North America.

A Lady chapel or lady chapel is a traditional British term for a chapel dedicated to "Our Lady", Mary, mother of Jesus, particularly those inside a cathedral or other large church. The chapels are also known as a Mary chapel or a Marian chapel, and they were traditionally the largest side chapel of a cathedral, placed eastward from the high altar and forming a projection from the main building, as in Winchester Cathedral. Most Roman Catholic and many Anglican cathedrals still have such chapels, while mid-sized churches have smaller side-altars dedicated to the Virgin.