St. Mark's Episcopal Church 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 at 69-75 Hudson Avenue in Green Island

Green Island, New York

Green Island is a coterminous town and village in Albany County, New York, USA some 8 miles north of Albany, New York. Green Island is one of only five such town-village amalgams in New York. The population was 2,620 at the 2010 census...

, Albany County, New York

Albany County, New York

Albany County is a county located in the U.S. state of New York, and is part of the Albany-Schenectady-Troy Metropolitan Statistical Area. The name is from the title of the Duke of York and Albany, who became James II of England . As of the 2010 census, the population was 304,204...

. It was built in 1866-1867 in a Gothic Revival

Gothic Revival architecture

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

 style. It is a rectangular, brick trimmed stone church building with a steeply pitched roof with three steeply pitched dormers, covered in polychrome 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...

. The front gable features three pointed Gothic windows and a rose window

Rose window

A Rose window is often used as a generic term applied to a circular window, but is especially used for those found in churches of the Gothic architectural style and being divided into segments by stone mullions and tracery...

. It also has a stone bell tower

Bell tower

A bell tower is a tower which contains one or more bells, or which is designed to hold bells, even if it has none. In the European tradition, such a tower most commonly serves as part of a church and contains church bells. When attached to a city hall or other civic building, especially in...

. The two story brick rectory

Rectory

A rectory is the residence, or former residence, of a rector, most often a Christian cleric, but in some cases an academic rector or other person with that title...

 was added in 1883-1884.

It was listed on 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 1978.