The 1876 Gothic-style cathedral, the bishop's house, and the St. Mary's and St. Paul's school buildings were all part of an elaborate memorial for Garden City's founder, A.T. Stewart, commissioned by his wife, Cornelia. The bells, purchased at the Philadelphia Centennial exposition in 1876, are replicas of the Liberty Bell; there are 13 of them, one for each of the original colonies. The church is noted for its hand-carved mahogany woodwork and rare marble. The Casavant
organ, the largest pipe organ on Long Island, has 103 ranks of pipes.