Oswego County Courthouse is a historic courthouse

Courthouse

A courthouse is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English speaking countries, buildings which house courts of law are simply...

 located at Oswego

Oswego, New York

Oswego is a city in Oswego County, New York, United States. The population was 18,142 at the 2010 census. Oswego is located on Lake Ontario in north-central New York and promotes itself as "The Port City of Central New York"...

 in Oswego County, New York

Oswego County, New York

Oswego County is a county located in the U.S. state of New York. As of the 2010 Census, the estimated population was 122,109. The City of Oswego and the Village of Pulaski serve as the dual county seats in a two shire system of government...

. It was built in 1859-1860 and altered in 1891 and again in 1962. The two story building rises above a cruciform

Cruciform

Cruciform means having the shape of a cross or Christian cross.- Cruciform architectural plan :This is a common description of Christian churches. In Early Christian, Byzantine and other Eastern Orthodox forms of church architecture this is more likely to mean a tetraconch plan, a Greek cross,...

 plan and is constructed of load bearing masonry walls faced with smooth ashlar 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....

. It features a portico

Portico

A portico is a porch leading to the entrance of a building, or extended as a colonnade, with a roof structure over a walkway, supported by columns or enclosed by walls...

 surmounted by a domed cupola

Cupola

In architecture, a cupola is a small, most-often dome-like, structure on top of a building. Often used to provide a lookout or to admit light and air, it usually crowns a larger roof or dome....

. It was designed by noted architect Horatio Nelson White

Horatio Nelson White

Horatio Nelson White was an American architect.He was one of New York State's most prominent architects from about 1865 to 1880. A resident of Syracuse, he designed many homes, armories, churches, and public buildings throughout sentralNew York State, included: The Hall of Languages at Syracuse...

 (1814–1892).

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 2000.