Marshlands Conservancy is a 147-acre nature preserve in the city of Rye, New York, fully owned and operated by Westchester County Parks. It has numerous wildlife habitats, ranging from ponds to creeks to a large meadow area, succession forest, freshwater wetlands, and the only extensive salt marsh in Westchester. It borders Long Island Sound and can be entered via an easement on the historic Boston Post Road. It is one of 5 properties that together constitute the Boston Post Road Historic District. It has high archaeological sensitivity. The conservancy has also been designated an Important Bird Area.

The Jay Estate is a 23-acre park and historic site in Rye, New York, with the 1838 Peter Augustus Jay House at its center. It is the keystone of the Boston Post Road Historic District, a National Historic Landmark District (NHL) created in 1993. The site is the surviving remnant of the 400-acre (1.6 km2) farm where US Founding Father, John Jay, grew up. It is also the place where Jay returned to celebrate the end of the American Revolutionary War, after he negotiated the 1783 Treaty of Paris with fellow peacemakers John Adams and Benjamin Franklin. The preserved property is located on the south side of the Boston Post Road and has a 3⁄4-mile (1.2 km) view of Milton Harbor.