Land of Clover, also known as the Lathrop Brown Estate, is a national historic district located at Nissequogue in Suffolk County, New York. The district encompasses an estate with six contributing buildings and one contributing structure. The estate house is a large two-story brick Georgian Revival structure built between 1912 and 1918. It is loosely patterned after Westover Plantation. Also on the property are a contributing horseshoe stable, superintendent's cottage, ice house and garage, U-shaped barn, small barn and a water tower. It is now a boarding school known as The Knox School. The Estate house is currently known as Houghton Hall. It was added to the National Register of Historic Places in 1993.