브라운스톤
Sign in to savethumb|300x300px|Brownstones in Harlem, Manhattan, New York City 300px|thumb|Biking among brownstones in Park Slope, Brooklyn Brownstone is a brown Triassic–Jurassic sandstone that was historically a popular building material. The term is also used in the United States and Canada to refer to a townhouse clad in this or any other aesthetically similar material.