St. Thomas' Episcopal Church Complex is a historic Episcopal

Episcopal Church (United States)

The Episcopal Church is a mainline Anglican Christian church found mainly in the United States , but also in Honduras, Taiwan, Colombia, Ecuador, Haiti, the Dominican Republic, Venezuela, the British Virgin Islands and parts of Europe...

 church complex at 158-168 W. Boston Post Road in Mamaroneck

Mamaroneck (village), New York

Mamaroneck is a village in Westchester County, New York, United States. The population was 18,929 at the 2010 census. It is located partially within the town of Mamaroneck and partially within the town of Rye. The portion in Rye is unofficially called "Rye Neck"...

, Westchester County, New York

Westchester County, New York

Westchester County is a county located in the U.S. state of New York. Westchester covers an area of and has a population of 949,113 according to the 2010 Census, residing in 45 municipalities...

. The complex consists of a group of four buildings built between 1884 and 1925. The Gothic Revival

Gothic Revival architecture

The Gothic Revival is an architectural movement that began in the 1740s in England...

 style church is constructed entirely of rough-dressed Belleville brownstone

Brownstone

Brownstone is a brown Triassic or Jurassic sandstone which was once a popular building material. The term is also used in the United States to refer to a terraced house clad in this material.-Types:-Apostle Island brownstone:...

 with a red slate

Slate

Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. The result is a foliated rock in which the foliation may not correspond to the original sedimentary layering...

 gable roof. It features a square tower on the north facade with clock faces and louvres. The property also includes the Parish House / Chapel (1884-1886), Endowment Building (1887), and Heathcote Hall (1925).

It was added to the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

in 2003.