George C. Boldt Yacht House is a historic yacht house

Boathouse

A boathouse is a building especially designed for the storage of boats, normally smaller craft for sports or leisure use. These are typically located on open water, such as on a river. Often the boats stored are rowing boats...

 located on the northeast shore of Wellesley Island

Wellesley Island

Wellesley Island in Jefferson County, New York, USA is partially in the Town of Orleans and partially in the Town of Alexandria.-Geography:...

 near Alexandria Bay

Alexandria Bay, New York

Alexandria Bay is a village in Jefferson County, New York, United States. The population was 1,080 at the 2010 census.The Village of Alexandria Bay is in the Town of Alexandria.Keewaydin State Park is southeast of the village...

 in Jefferson County, New York

Jefferson County, New York

Jefferson County is a county located in the U.S. state of New York. As of the 2010 census, the population was 116,229. It is named after Thomas Jefferson, third President of the United States of America, and president at the time the county was created in 1805...

. It was designed by the Philadelphia architects G. W. & W. D. Hewitt

G. W. & W. D. Hewitt

G. W. & W. D. Hewitt was a prominent architectural firm in the eastern United States at the turn of the twentieth century. It was founded in Philadelphia in 1878, by brothers George Wattson Hewitt and William Dempster Hewitt , both members of the American Institute of Architects...

, built in 1903, and is a massive eclectic Shingle

Queen Anne Style architecture

The Queen Anne Style in Britain means either the English Baroque architectural style roughly of the reign of Queen Anne , or a revived form that was popular in the last quarter of the 19th century and the early decades of the 20th century...

 style structure composed of five elements. They are 1) a circular tower containing reception rooms; 2) a central group of three yacht service bays; 3) a large east service bay; 4) a combination office and storage wing with a crenelated tower; and 5) a large caretaker's residence. It was built by George Boldt

George Boldt

George Charles Boldt was a Prussian-born American hotelier. A self-made millionaire, he influenced the development of the urban hotel as a civic social center and luxury destination.-Philadelphia:...

 as a principal dependency of Boldt Castle

Boldt Castle

Boldt Castle, located on Heart Island in the Thousand Islands of the Saint Lawrence River, along the northern border of New York State, is a major landmark and tourist attraction in its region.-History:...

. The Kestrel

Kestrel (steam yacht)

The Kestrel is located in the George C. Boldt Yacht House on the Saint Lawrence River in Jefferson County, New York. The vessel was built in 1892 and was added to the National Register of Historic Places on August 12, 1977 when it was located in West New York, New Jersey...

 is located in the yacht house.

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.