Charles Homer Davis House

Karpen House is a historic home located at Lloyd Harbor in Suffolk County, New York. It was built in 1955 and is a long, low residence surmounted by a flat roof with overhanging eaves. It represents a vernacular interpretation of the Modern style.It was added to the National Register of Historic Places in 2006.

Van Wyck-Lefferts Tide Mill ( van WYKE) is a historic tide mill located at Lloyd Harbor in Suffolk County, New York. It was built about 1793 and is a 3+1⁄2-story, gable-roofed, timber-framed rectangular building little altered since the early 19th century. The property also includes the earthen mill dam with sluice gates. The Nature Conservancy, which owns the mill, offers free boat tours to the site from May through October.It was added to the National Register of Historic Places in 1978.

Goose Hill Road Historic District is a national historic district located at Cold Spring Harbor in Suffolk County, New York. The district has 11 contributing buildings. It is a small agrarian enclave situated along both sides of a narrow, winding road. The dwellings date from the late 18th to mid-19th century.It was added to the National Register of Historic Places in 1985.

Lloyd Harbor is a village in the Town of Huntington in Suffolk County, on the North Shore of Long Island, in New York, United States. As of the 2010 census, the village's population was 3,660.

Silas Sammis House is a historic home located at Huntington in Suffolk County, New York. It consists of a 1+1⁄2-story, five-bay, shingled section built about 1730 and a larger, three-bay, 1+1⁄2-story shingled residence built about 1800. The small east wing was the original dwelling. It is an intact example of settlement period architecture in Huntington.It was added to the National Register of Historic Places in 1985.

Coindre Hall, originally called West Neck Farm, is a 40-room, 80,000-square-foot (7,400 m2) mansion in the style of a medieval French château completed in 1912 for pharmaceutical magnate George McKesson Brown. Coindre Hall sits on 33 acres (13 ha) of rolling land overlooking Huntington Harbor, near the Long Island Sound.

The Seminary of the Immaculate Conception was a Catholic seminary in Lloyd Harbor, New York, accredited by the Association of Theological Schools in the United States and Canada, and serving the Diocese of Rockville Centre. It offered a number of academic degrees, primarily those of Master of Divinity (M.Div.) and Doctor of Ministry (D.Min.).

Titus-Bunce House is a historic home located at Cold Spring Harbor in Suffolk County, New York. It is a 2-story, three-bay structure with a 1+1⁄2-story, three-bay side wing. It was built about 1820, with decorative additional made in the 1850s in the Italianate style.It was added to the National Register of Historic Places in 1985.

Gilsey Mansion is a historic home located at Huntington in Suffolk County, New York. It is a large, seven-bay, two-story clapboard, T-shaped residence with a hipped roof, built about 1900 in the Colonial Revival style. A four-bay, two-story gable-roofed wing projects to the rear. It features a porte cochere on tapered Doric order columns and a pedimented portico.It was added to the National Register of Historic Places in 1985.

Main Street Historic District is a national historic district located at Cold Spring Harbor in Suffolk County, New York. The district has 32 contributing buildings. The majority of the buildings were built between 1855 and 1890. It encompasses the village's historic core and charts its development from a major whaling port to a summer resort community.It was added to the National Register of Historic Places in 1985.

Shore Road Historic District is a national historic district located at Cold Spring Harbor in Suffolk County, New York. The district has 20 contributing residential buildings. They sit at the foot of a steep wooded bluff and date from the early 19th century, the oldest dating to about 1790. It includes works by architect Grosvenor Atterbury.It was added to the National Register of Historic Places in 1985.

The Cold Spring Harbor Library & Environmental Center is located at Cold Spring Harbor in Suffolk County, New York. It was founded as the Cold Spring Harbor Village Improvement Society in 1899. However, the library, consisting of a small collection of books, was first organized in 1886 and was housed at the Cutting House, 241 Harbor Road, Cold Spring Harbor. This building was located across the street from the local gristmill and the first librarian was the miller's wife, Mrs. Peter Waters. This building is now owned by the Cold Spring Harbor Laboratory.