Substation 219, also known as Harlem Substation, is a historic electrical substation

Electrical substation

A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions...

 located in Harlem

Harlem

Harlem is a neighborhood in the New York City borough of Manhattan, which since the 1920s has been a major African-American residential, cultural and business center. Originally a Dutch village, formally organized in 1658, it is named after the city of Haarlem in the Netherlands...

, New York, New York

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

. It was constructed by the Interborough Rapid Transit Company

Interborough Rapid Transit Company

The Interborough Rapid Transit Company was the private operator of the original underground New York City Subway line that opened in 1904, as well as earlier elevated railways and additional rapid transit lines in New York City. The IRT was purchased by the City in June 1940...

 in 1932 to provide power to the IND Eighth Avenue Line

IND Eighth Avenue Line

The Eighth Avenue Line is a rapid transit line in New York City, United States, and is part of the B Division of the New York City Subway...

. It is a single story, double height masonry building in the Art Deco

Art Deco

Art deco , or deco, is an eclectic artistic and design style that began in Paris in the 1920s and flourished internationally throughout the 1930s, into the World War II era. The style influenced all areas of design, including architecture and interior design, industrial design, fashion and...

 style. It features a low brick parapet

Parapet

A parapet is a wall-like barrier at the edge of a roof, terrace, balcony or other structure. Where extending above a roof, it may simply be the portion of an exterior wall that continues above the line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a...

 topped by a band of limestone

Limestone

Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate . Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera....

 coping and a limestone frieze

Frieze

thumb|267px|Frieze of the [[Tower of the Winds]], AthensIn architecture the frieze is the wide central section part of an entablature and may be plain in the Ionic or Doric order, or decorated with bas-reliefs. Even when neither columns nor pilasters are expressed, on an astylar wall it lies upon...

 consisting of diamond shaped limestone pieces and a brick chevron pattern. The main entrance doors are faced in aluminium

Aluminium

Aluminium or aluminum is a silvery white member of the boron group of chemical elements. It has the symbol Al, and its atomic number is 13. It is not soluble in water under normal circumstances....

 and incorporate Art Deco style geometric motifs.

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 2006.