St. Mary’s Church (The Church of the Immaculate Conception) is the oldest Roman Catholic parish in the city of Yonkers. More than an ordinary church, St. Mary’s is often called the "Cathedral of the Hudson River Valley." And for good reason. Humble but elegant, the church is larger and grander than any other Catholic church in Yonkers. But right now the church is under wraps and slated to close its door on July 1, 2024.