The historic 23-acre Jay Estate, including its buildings, landscape and gardens, is being restored by the not-for-profit Jay Heritage Center. The site was added to the Westchester County African American Heritage Trail in 2004 by then County Executive Andrew Spano because of its association with John Jay and his lasting legacy to abolish slavery through law in his home state beginning in 1777, along with the efforts of his descendants: "With respect to the abolition of slavery in New York, no New Yorker was as persistent, politically skilled, and, ultimately, as legally effective as John Jay." His legacy was complicated: while Jay was founder and president of the Manumission Society of New York, and signed legislation as governor to abolish slavery in 1799, he held enslaved African Americans as workers here until 1810. Free African Americans also worked for wages at his estates. This house was designated as a member site of the Hudson River Valley National Heritage Area in January 2009 because of 1) the architectural and historical significance of its buildings; 2) as significant parkland it illustrates the role of the Hudson River Valley in the modern environmental movement; 3) the site is associated with great Americans and social issues, particularly the examination of the abolition of slavery; and 4) because of its once notable formal gardens and landscape. Governor Andrew Cuomo added the site to New York State's "Path Through History" in 2013 for its ongoing relevance to the historic interpretation of Civil Rights in New York. The 1838 Peter Augustus Jay Mansion at the center of the property is owned outright by the Jay Heritage Center; it is one of two Greek Revival residences in the larger landmarked district. The mansion is situated on the site of the childhood home of American Founding Father John Jay, with approximately the same orientation and viewsheds. John Jay's house was built upon the footprint of an older 18th-century farmhouse, "The Locusts". Jay's eldest son, Peter Augustus Jay, replaced it with the current structure in the early nineteenth century. The mansion was constructed according to specifications in a contract between Jay and a builder named Edwin Bishop, and details appear to have been drawn from architectural pattern books by Minard Lafever and Chester Hills. Restoration of the house is an official Save America's Treasures project.
*1907 Van Norden Carriage House
This bright yellow Classical Revival structure serves as the Visitor Center and is open to the public.
The Jay Cemetery is a private cemetery of. John Jay was buried there in 1829. It is not open to the public.
Lounsbury (1831), also known as Lounsberry or the Parsons Estate
This second Greek Revival residence in the district has a notable library designed by Delano & Aldrich. It is privately owned and not open to the public.
The Marshlands Conservancy is owned and operated by Westchester County Parks. It is a nature preserve with a diverse number of habitats - several ponds, an East Stream, West Creek, open meadow, woodland, salt marsh, and fresh water wetlands - that attract a variety of flora and fauna. Historically, the land was part of the larger old Jay Estate and the neighboring Parsons Estate. It was formed from two separate gifts in the 20th century: one of 120 acres given by Zilph Devereux to Westchester County on November 9, 1966, and another of 27 acres given by Fanny Wickes Parsons to Westchester County in December 1977. The resulting parcel of was rededicated as passive parkland in 1997 by Westchester County so that "The natural area and wildlife sanctuary will be protected, preserved and regulated as a nature and wildlife preserve to be used only for passive recreation." It has been recognized as an Important Bird Area.