Henry Clay Frick House

The Henry Clay Frick House (also known as the Frick Collection building or 1 East 70th Street) is a mansion and museum building on Fifth Avenue, between 70th and 71st streets, on the Upper East Side of Manhattan in New York City, United States. Designed by Thomas Hastings as the residence of the industrialist Henry Clay Frick, the house contains the Frick Collection museum and the Frick Art Reference Library. The house and library building are designated as a New York City landmark and National Historic Landmark.

The house has three stories and is separated from Fifth Avenue by an elevated garden. It has three wings to the north, center, and south, arranged in an L shape. The limestone facade contains several carved pediments and tympana. Most of the house remained essentially unchanged from the time of its construction until 1931. The first floor contained the family's communal rooms; the second floor contained their bedrooms and private rooms; and the third floor contained the servants' quarters. There was also a basement with service areas. The first and second-floor rooms have been adapted into museum spaces over the years.