Cliffbourne was an early 19-century estate that once stood on the west side of present day Cliffbourne Place NW, a one-block stretch between Calvert and Biltmore Streets. Cliffbourne, literally meaning "bordering a cliff," was an appropriate name for this estate. Immediately to the north of John Little's house in the Kalorama Triangle neighborhood, it stretched from Columbia Road westward ending at a steep bluff where it met the Rock Creek valley at 20th Street, NW. Cliffourne was the first house built in Kalorama Triangle and over time would also also give its name to a Civil War hospital, an 1898 subdivision, an apartment building, as well as to the street itself.