Henry Smith Farm, also known as Hidden Spring Farm, is a historic home, barn, and vaulted cellar located at Middletown

Middletown, Dauphin County, Pennsylvania

Middletown is a borough in Dauphin County, Pennsylvania, on the Susquehanna River, nine miles southeast of Harrisburg. It is part of the Harrisburg–Carlisle Metropolitan Statistical Area.-History:...

, Dauphin County, Pennsylvania

Dauphin County, Pennsylvania

Dauphin County is a county in the U.S. state of Pennsylvania and is one of the three counties comprising the Harrisburg–Carlisle Metropolitan Statistical Area. As of 2010 census, the population was 268,100. The county includes the city of Harrisburg, which has served as the state capital...

. The house was built in 1806, and two-story, five bay, double pile building built of 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:...

 in the Federal

Federal architecture

Federal-style architecture is the name for the classicizing architecture built in the United States between c. 1780 and 1830, and particularly from 1785 to 1815. This style shares its name with its era, the Federal Period. The name Federal style is also used in association with furniture design...

 style. The interior has a center hall plan in the Georgian

Georgian architecture

Georgian architecture is the name given in most English-speaking countries to the set of architectural styles current between 1720 and 1840. It is eponymous for the first four British monarchs of the House of Hanover—George I of Great Britain, George II of Great Britain, George III of the United...

 style. A two-story kitchen addition was built in 1840. The brownstone bank barn

Bank barn

A bank barn or banked barn is a style of barn noted for its accessibility, at ground level, on two separate levels. Often built into the side of a hill, or bank, both the upper and the lower floors area could be accessed from ground level, one area at the top of the hill and the other at the bottom...

 was built in 1845-1847. Located near the house is a vaulted cellar built of rubble stone.

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 1988.