and Shingle styles, as well as several 19th century mill structures along the East Aspetuck River. Antique barns and other agricultural outbuildings are also widely prevalent. Because New Preston's steep, rocky terrain presents significant constraints to development, most viable development sites were utilized prior to 1900, making contemporary construction of new homes and businesses rare. As a consequence, New Preston exhibits a high degree of architectural and aesthetic cohesion. When new construction does occur, it generally follows—or attempts to follow—the historic vernacular. Portions of New Preston Hill Road and Findlay Road, three quarters of a mile west of the village center, are included in the New Preston Hill Historic District, which was listed on the National Register of Historic Places in 1985. The more prominent buildings in that district include Hill Congregational Church, the Rev. Samuel Whittlesey House (1808), and the John Ferris House (1800). Open space A substantial portion of the land in and around New Preston is permanently protected open space, which consists of state parks, local land trust holdings, and privately owned parcels under conservation easement. Public open space areas include the Macricostas Preserve, Mount Bushnell State Park, and a parcel adjacent to the New Preston village center, which the town of Washington purchased in 2010 with money from its open space fund. Scenic roads In 1996, the Connecticut Department of Transportation designated the of perimeter roads around Lake Waramaug as state scenic roads, affording them a legal status that discourages maintenance or improvements that would detract from the roads' scenic qualities. In 2010, New Preston's main commercial thoroughfare, East Shore Road (also known as Connecticut Route 45), was designated a state scenic road, together with a portion of Route 202 extending northeast from the junction with Route 45 to Rabbit Hill Road. The town of Washington has also given municipal scenic road designations in New Preston to Rabbit Hill Road, Couch Road, Gunn Hill Road, and Whittlesey Road. Postal addresses, municipalities, and nomenclature Although the village of New Preston and the New Preston CDP are entirely within the town of Washington, U.S. Postal Service addressing practices result in the name being applied to the Marble Dale section of Washington, and to portions of the adjacent town of Warren. While New Preston village once had its own post office, it is now served by a combined New Preston-Marble Dale post office, which is located in Marble Dale,